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Keyword: asteroids

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  • Did A Giant Impact Create The Two Faces Of Mars?

    03/15/2007 2:14:24 PM PDT · by blam · 32 replies · 855+ views
    New Scientist ^ | 3-15-2007 | David Shiga
    Did a giant impact create the two faces of Mars? 16:29 15 March 2007 NewScientist.com news service David Shiga, Houston Mars's northern hemisphere is lower in elevation – by about 5 kilometres – than its southern hemisphere (see image below). This coloured topographical map shows low elevations in blue and high elevations in yellow and red. The map is centred on a latitude of 55° north (Illustration: Mike Caplinger/MSSS) Mars's southern hemisphere is higher and more heavily cratered than the northern hemisphere, suggesting it is older terrain. The two low elevations (blue) in this map, which is centred on the...
  • Red Planet Impact: Huge Moons May Have Crashed Into Mars

    07/04/2016 6:40:49 PM PDT · by BenLurkin · 11 replies
    Space.com ^ | July 4, 2016 11:01am ET | Charles Q. Choi
    Phobos and Deimos are both small for moons — about 14 and 7.7 miles (22.5 and 12.4 kilometers) wide, respectively — and sort of potato-shaped. Compared to other satellites in the solar system, they look more like asteroids. As a result, astronomers previously hypothesized that these moons were asteroids captured by Mars' gravitational pull. ...previous research suggested that Phobos and Deimos would have relatively irregular orbits. In reality, these moons have nearly circular orbits positioned near the Martian equator. ... huge impact that previous research suggested created the gigantic Borealis basin in the northern lowlands of Mars, which covers two-fifths...
  • Monster volcano gave Mars extreme makeover: study

    03/03/2016 11:08:06 AM PST · by BenLurkin · 17 replies
    phys.org ^ | March 2, 2016 by | Laurence Coustal, Marlowe Hood
    A volcano on Mars half the size of France spewed so much lava 3.5 billion years ago that the weight displaced the Red Planet's outer layers, according to a study released Wednesday. Mars' original north and south poles, in other words, are no longer where they once were. The findings explain the unexpected location of dry river beds and underground reservoirs of water ice, as well as other Martian mysteries that have long perplexed scientists, the lead researcher told AFP. "If a similar shift happened on Earth, Paris would be in the Polar Circle," said Sylvain Bouley, a geomorphologist at...
  • Red Planet's Ancient Equator Located

    04/24/2005 8:18:25 PM PDT · by SunkenCiv · 64 replies · 2,163+ views
    Scientific American (online) ^ | April 20, 2005 | Sarah Graham
    Jafar Arkani-Hamed of McGill University discovered that five impact basins--dubbed Argyre, Hellas, Isidis, Thaumasia and Utopia--form an arclike pattern on the Martian surface. Three of the basins are well-preserved and remain visible today. The locations of the other two, in contrast, were inferred from measurements of anomalies in the planet's gravitational field... a single source--most likely an asteroid that was initially circling the sun in the same plane as Mars--created all five craters. At one point the asteroid passed close to the Red Planet... and was broken apart by the force of the planet's gravity. The resulting five pieces subsequently...
  • New Theory: Catastrophe Created Mars' Moons

    07/29/2003 8:56:47 AM PDT · by RightWhale · 62 replies · 1,837+ views
    space.com ^ | 29 Jul 03 | Leonard David
    New Theory: Catastrophe Created Mars' Moons By Leonard David Senior Space Writer posted: 07:00 am ET 29 July 2003 PASADENA, California – The two moons of Mars – Phobos and Deimos – could be the byproducts of a breakup of a huge moon that once circled the red planet, according to a new theory. The capture of a large Martian satellite may have taken place during or shortly after the formation of the planet, with Phobos and Deimos now the surviving remnants. Origin of the two moons presents a longstanding puzzle to which one researcher proposed the new solution at...
  • Long-Destroyed Fifth Planet May Have Caused Lunar Cataclysm, Researchers Say

    03/25/2002 2:42:10 PM PST · by vannrox · 154 replies · 4,757+ views
    SPACE dot COM ^ | 18 March 2002 ,posted: 03:00 pm ET | By Leonard David, Senior Space Writer
    Asteroid Vesta: The 10th Planet? Discovery Brightens Odds of Finding Another Pluto Nemesis: The Million Dollar Question HOUSTON, TEXAS -- Our solar system may have had a fifth terrestrial planet, one that was swallowed up by the Sun. But before it was destroyed, the now missing-in-action world made a mess of things. Space scientists John Chambers and Jack Lissauer of NASA's Ames Research Center hypothesize that along with Mercury, Venus, Earth, and Mars -- the terrestrial, rocky planets -- there was a fifth terrestrial world, likely just outside of Mars's orbit and before the inner asteroid belt. Moreover, Planet V...
  • Asteroid Day 2016 Is June 30

    06/29/2016 8:57:55 PM PDT · by nickcarraway · 15 replies
    Earthsky ^ | June 29, 2016 | Eleanor Imster
    Hundreds of events – films, concerts, panels with engineers, scientists and astronauts – about asteroids and how to protect our planet from asteroid impacts.The second annual Asteroid Day happens on June 30, 2016. Asteroid Day is a global awareness campaign to help people learn about asteroids and what we can do to protect our planet from asteroid impacts. You can join the Asteroid Day discussion on Twitter and Facebook. Asteroid Day 2016 will also include hundreds of events – films, concerts, interactive workshops and panels with engineers, scientists and astronauts. Here’s the premise of Asteroid Day, in the words of...
  • An Impact Event in 3114BC? The beginning of a Turbulent Millennium.

    01/03/2003 8:06:06 PM PST · by ckilmer · 50 replies · 8,249+ views
    An Impact Event in 3114BC? The Beginning of a Turbulent Millennium. Recurring Phenomenon: The Cosmic DisasterThe Mayan CalendarStonehengeA Possible Source for the 3100 BC Event Collected and commented by Timo Niroma, Helsinki, Finland Go to the Evidence of Astronomical Aspects of Mankind's Past and Recent Climate Homepage Recurring Phenomenon: The Cosmic Disaster Besides the most evident cosmic catastrophes ca. 2200 BC and 2345 BC there are other events during the Holocene that are so widely global and difficult to explain by only the Earth's own mechanisms that a cosmic explanation must evidently be taken into account. The first so-called...
  • Heavenly Bodies Stir Up Routine Catastrophes

    03/18/2003 9:33:33 AM PST · by blam · 9 replies · 842+ views
    IOL ^ | 3-18-2003 | Graeme Addison
    Heavenly bodies stir up routine catastrophes March 18 2003 at 01:30PM By Graeme Addison Legend has it that when two people get together and er... bond, the Earth will move – at least in a metaphorical sense. Likewise, it takes two heavenly bodies, an impactor and a target, to come together with Earth-shattering force to form a crater. There’s nothing dreamlike about this: it happens, frequently, throughout the solar system. Impact catastrophes are routine. Just over two-billion years ago, a chunk of asteroid at least the size of Table Mountain struck the landmass that is now South Africa. It hurtled...
  • An Empire's Epidemic (Justinian Plague)

    09/18/2006 4:38:39 PM PDT · by blam · 38 replies · 1,248+ views
    UCLA ^ | 5-6-2002 | Thomas H Maugh II
    An Empire's Epidemic Scientists Use DNA in Search for Answers to 6th Century Plague By THOMAS H. MAUGH II, Times Staff Writer By the middle of the 6th century, the Emperor Justinian had spread his Byzantine Empire around the rim of the Mediterranean and throughout Europe, laying the groundwork for what he hoped would be a long-lived dynasty. His dreams were shattered when disease-bearing mice from lower Egypt reached the harbor town of Pelusium in AD 540. From there, the devastating disease spread to Alexandria and, by ship, to Constantinople, Justinian's capital, before surging throughout his empire. By the time...
  • Sun's Movement Through Milky Way... Comets Hurtling...Life Extinctions

    05/02/2008 8:53:50 AM PDT · by blam · 84 replies · 222+ views
    Science Daily ^ | 5-2-2008 | Cardiff University
    Sun's Movement Through Milky Way Regularly Sends Comets Hurtling, Coinciding With Mass Life ExtinctionsA large body of scientific evidence now exists that support the hypothesis that a major asteroid or comet impact occurred in the Caribbean region at the boundary of the Cretaceous and Tertiary periods in Earth's geologic history. Such an impact is suspected to be responsible for the mass extinction of many floral and faunal species, including the large dinosaurs, that marked the end of the Cretaceous period. (Credit: Art by Don Davis / Courtesy of NASA) ScienceDaily (May 2, 2008) — The sun's movement through the Milky...
  • Centaurs Keep Their Rings From Greedy Gas Giants

    06/26/2016 10:36:02 AM PDT · by BenLurkin · 14 replies
    universetoday.com ^ | 06/24/2016 | Matt Williams
    Centaurs are a population of objects within our Solar System that behave as both comets and asteroids (hence why they are named after the hybrid beasts of Greek mythology). 10199 Chariklo is the largest known member of the Centaur population, a possible former Trans-Neptunian Object (TNO) which currently orbits between Saturn and Uranus. The rings around this asteroid were first noticed in 2013 when the asteroid underwent a stellar occultation. This revealed a system of two rings, with a radius of 391 and 405 km and widths of about 7 km 3 km, respectively. The absorption features of the rings...
  • Clues to ancient giant asteroid found in Australia

    05/16/2016 8:53:57 AM PDT · by JimSEA · 8 replies
    Science Daily ^ | 5/16/2016 | Australian National University
    Scientists have found evidence of a huge asteroid that struck the Earth early in its life with an impact larger than anything humans have experienced. Tiny glass beads called spherules, found in north-western Australia were formed from vaporised material from the asteroid impact, said Dr Andrew Glikson from The Australian National University (ANU). "The impact would have triggered earthquakes orders of magnitude greater than terrestrial earthquakes, it would have caused huge tsunamis and would have made cliffs crumble," said Dr Glikson, from the ANU Planetary Institute. "Material from the impact would have spread worldwide. These spherules were found in sea...
  • Planetary Resources Development Corp. Awarded U.S. Patent No. 9,266,627 for Asteroid Mining Process

    03/25/2016 7:06:58 AM PDT · by CMB_polarization · 13 replies
    US Patent and Trademark Office ^ | February 23, 2016 | Eeric Anderson, etal
    "An embodiment of the present application relates to a method of prospecting asteroids for mining, comprising: (a) launching at least one spacecraft, the spacecraft including a space telescope; (b) examining a plurality of asteroids using the space telescope to gather scientific data for asteroid characterization and cataloguing; and (c) selecting one or more asteroids to mine from the plurality of asteroids examined by the space telescope and stored within the catalogue. Another embodiment of the present application relates to a system for prospecting asteroids for mining, comprising: (a) at least one spacecraft; and (b) a space telescope mounted on the...
  • Rapid short-term cooling following the Chicxulub impact at the Cretaceous–Paleogene boundary

    05/19/2014 4:31:05 PM PDT · by SunkenCiv · 39 replies
    PNAS.org ^ | approved April 11, 2014 | Johan Vellekoop et al
    Here, for the first time (to our knowledge), we are able to demonstrate unambiguously that the impact at the Cretaceous–Paleogene boundary (K–Pg, ∼66 Mya) was followed by a so-called “impact winter.” This impact winter was the result of the injection of large amounts of dust and aerosols into the stratosphere and significantly reduced incoming solar radiation for decades. Therefore, this phase will have been a key contributory element in the extinctions of many biological clades, including the dinosaurs. The K–Pg boundary impact presents a unique event in Earth history because it caused global change at an unparalleled rate. This detailed...
  • Dead comet with skull face to hurtle by Earth on Halloween

    11/01/2015 7:14:40 AM PST · by BenLurkin · 9 replies
    AFP/Yahoo ^ | October 31, 2015
    Astronomers initially thought the object was an asteroid when they spotted it in early October, and named it Asteroid 2015 TB145. But using the US space agency's Infrared Telescope Facility (IRTF) on Mauna Kea, Hawaii, experts "have determined that the celestial object is more than likely a dead comet that has shed its volatiles after numerous passes around the sun," NASA's Jet Propulsion Laboratory said in a statement late Friday. ... The space rock has already grabbed attention with its unusually high speed and big size, about as large as a football stadium at 2,000 feet (600 meters) in diameter....
  • Why Earth is so much bigger than Mars: Rocky planets formed from 'pebbles'

    10/27/2015 11:47:58 AM PDT · by JimSEA · 9 replies
    Science Daily ^ | 10/27/2015 | Southwest Research Institute
    Using a new process in planetary formation modeling, where planets grow from tiny bodies called "pebbles," Southwest Research Institute scientists can explain why Mars is so much smaller than Earth. This same process also explains the rapid formation of the gas giants Jupiter and Saturn, as reported earlier this year. "This numerical simulation actually reproduces the structure of the inner solar system, with Earth, Venus, and a smaller Mars," said Hal Levison, an Institute scientist at the SwRI Planetary Science Directorate. He is the first author of a new paper published in the Proceedings of the National Academy of Sciences...
  • Double Whammy: 2 Meteors Hit Ancient Earth At The Same Time

    09/15/2015 9:53:39 AM PDT · by blam · 37 replies
    Fox News - Live Science ^ | 9-15-2015 | Elizabeth Palermo
    Elizabeth Palermo September 15, 2015An artist's depiction of the dual meteor strike. (Don Dixon/Erik Sturkell/University of Gothenburg) It's not altogether uncommon to hear about double rainbows, but what about a double meteor strike? It's a rare event, but researchers in Sweden recently found evidence that two meteors smacked into Earth at the same time, about 458 million years ago. Researchers from the University of Gothenburg uncovered two craters in the county of Jämtland in central Sweden. The meteors that formed the craters landed just a few miles from each other at the same moment, according to Erik Sturkell, a professor...
  • Asteroid threat in 2032? Don't panic, but don't brush it off

    02/09/2014 3:40:37 PM PST · by SunkenCiv · 46 replies
    NBC News ^ | February 3rd 2014 | Alan Boyle
    A big asteroid sailed past Earth last month, and astronomers haven't yet totally excluded the possibility that it'll hit us when it comes around in 2032. If the past is any guide, we won't have to worry about asteroid 2013 TV135 — but it's a reminder that we'll have to fend off a killer space rock one of these days. Ukrainian astronomers discovered 2013 TV135 just 10 days ago, well after the asteroid had its close encounter with Earth on Sept. 16. Actually, it wasn't all that close: The distance was 4.2 million miles (6.7 million kilometers), or about 17...
  • Jupiter Has Taken a Massive Meteor Hit (So Earth Didn’t Have To)

    09/12/2012 2:41:21 PM PDT · by LibWhacker · 47 replies
    Gizmodo ^ | 9/12/12 | Jamie Condliffe
    On Monday, Jupiter took a massive hit from a meteor, which was spotted by amateur astronomers based in the US—and if previous evidence is anything to go by, it could have saved Earth from a massive collision in the process. Dan Peterson of Racine, Wisconsin, was gazing at Jupiter on Monday when he saw a bright, white flash on the surface of the planet. When he posted his observation online, another astrophotographer, George Hall, discovered he'd unknowingly captured the massive explosion on video. Turns out it was probably a meteor striking the surface of the planet—and you can watch the...
  • Hubble Space Telescope Captures Rare Jupiter Collision

    06/06/2010 4:09:09 AM PDT · by jmcenanly · 16 replies · 1,672+ views
    NASA | 06.03.10
    Without warning, a mystery object struck Jupiter on July 19, 2009, leaving a dark bruise the size of the Pacific Ocean. The spot first caught the eye of an amateur astronomer in Australia, and soon, observatories around the world, including NASA’s Hubble Space Telescope, were zeroing in on the unexpected blemish. Astronomers had witnessed this kind of cosmic event before. Similar scars had been left behind during the course of a week in July 1994, when more than 20 pieces of Comet P/Shoemaker-Levy 9 (SL9) plunged into Jupiter’s atmosphere. The 2009 impact occurred during the same week, 15 years later....
  • Anthony Wesley records another impact on Jupiter!

    06/03/2010 7:11:22 PM PDT · by Yossarian · 19 replies · 761+ views
    Ice in Space (Australian Amateur Astronomy) ^ | 6/3/2010 | Anthony Wesley, by way of Mike Salway
    In breaking news, Anthony Wesley reports another impact on Jupiter, this morning. In his words: ".. at approximately 20:30utc this morning I recorded a large fireball on Jupiter, it lasted a couple of seconds and was very bright.This was a large fireball, but it doesn't seem to have left any mark, probably all gone in the upper atmosphere before it reached the clouds."His preliminary image (a raw frame from the video) is shown below. The fireball can be seen in the upper left of frame. A video and more details will follow soon.Stay tuned to IceInSpace for more, and for...
  • Third Jupiter Fireball Spotted——Sky-Watching Army Needed?

    08/25/2010 9:30:12 AM PDT · by LibWhacker · 27 replies
    National Geographic ^ | 8/24/10 | Andrew Fazekas
    Amateur sightings prompt call for a network of backyard astronomers.On August 20, for the third time in about a year, amateur astronomers spotted a fireball above Jupiter's atmosphere. The discovery suggests the planet gets walloped more often than previously thought, say astronomers, some of whom are calling for a global "volunteer army" of backyard Jupiter watchers. The recent flash follows on the heels of July 2009 and June 2010 fireballs over the gas giant planet. (See "Bright Fireball Slams Into Jupiter" [June 2010] and "Jupiter Impact Creates Huge New Spot" [July 2009].) Astronomers speculate that the August 20 flash was...
  • "Asteroid Impacts are the Biggest Threat to Advanced Life in the Milky Way" -Stephen Hawking

    09/26/2009 9:43:01 PM PDT · by LibWhacker · 24 replies · 1,597+ views
    Daily Galaxy ^ | 9/26/09 | Stephen Hawking
    Stephen Hawking believes that one of the major factors in the possible scarcity of intelligent life in our galaxy is the high probability of an asteroid or comet colliding with inhabited planets. We have observed, Hawking points out in Life in the Universe, the collision of a comet, Schumacher-Levi, with Jupiter (below), which produced a series of enormous fireballs, plumes many thousands of kilometers high, hot "bubbles" of gas in the atmosphere, and large dark "scars" on the atmosphere which had lifetimes on the order of weeks. It is thought the collision of a rather smaller body with the Earth,...
  • Hubble pictures Jupiter's 'scar'

    07/26/2009 5:15:10 PM PDT · by JoeProBono · 23 replies · 624+ views
    Hubble has trained its new camera on the atmospheric disturbance on Jupiter believed to have been caused by a comet or asteroid impact. The telescope used the Wide Field Camera 3 fitted on the recent shuttle servicing mission to capture ultra-sharp visible-light images of the scar. The dark spot near the gas giant's southern pole was noticed first by an amateur Australian astronomer.
  • Jupiter Struck by Object, NASA Images Confirm

    07/21/2009 6:07:43 AM PDT · by Red in Blue PA · 105 replies · 2,483+ views
    Foxnews ^ | 7/21/2009 | Staff
    PASADENA, California — A large comet or asteroid has slammed into Jupiter, creating an impact site the size of Earth, pictures by an Australian amateur astronomer show. NASA's Jet Propulsion Laboratory confirmed the discovery using its large infrared telescope at the summit of Mauna Kea in Hawaii, said computer programer Anthony Wesley, 44, who discovered the impact zone while stargazing at home. News of Wesley's find on a backyard 14.5-inch reflecting telescope has stunned the astronomy world, with scientists saying the impact will last only days more. Wesley said it took him 30 minutes to realize a dark spot rotating...
  • Rethinking Jupiter

    11/12/2007 9:59:25 AM PST · by SunkenCiv · 23 replies · 94+ views
    Astrobio.net ^ | Monday, November 12, 2007 | Lee Pullen
    Without Jupiter acting as a "cosmic vacuum cleaner" sucking up these dangerous objects, there would be so many catastrophic impacts that life probably wouldn't have evolved on the Earth and we wouldn't be here today... "This vacuum cleaner idea goes back to when the long-period comets coming in from the Oort Cloud were viewed as being the only significant impact risk," says Horner. "In the 1950s there were only one or two near-Earth asteroids known, so they were viewed as oddities." ...Since the 1950s, scientists have discovered more objects in the solar system, and they say many of them could...
  • Jupiter Increases Risk Of Comet Strike On Earth

    08/24/2007 1:21:38 PM PDT · by blam · 84 replies · 1,235+ views
    New Scientist ^ | 8-24-2007 | David Shiga
    Jupiter increases risk of comet strike on Earth 11:53 24 August 2007 NewScientist.com news service David Shiga Earth experienced an especially heavy bombardment of asteroids and comets early in the solar system's history (Illustration: Julian Baum) Contrary to prevailing wisdom, Jupiter does not protect Earth from comet strikes. In fact, Earth would suffer fewer impacts without the influence of Jupiter's gravity, a new study says. It could have implications for determining which solar systems are most hospitable to life. A 1994 study showed that replacing Jupiter with a much smaller planet like Uranus or Neptune would lead to 1000 times...
  • Why the World Needs Asteroid Insurance: Resident Astronaut {sky is falling alert}

    10/11/2008 7:05:35 AM PDT · by shove_it · 13 replies · 404+ views
    Popular Mechanics ^ | 10/9/2008 | Thomas D. Jones
    A mini asteroid collided safely with Sudan this week, but mega disaster looms with nearly 1000 hazardous near-Earth objects roaming our universe—plus even more dangerous ones we haven't spotted yet. With no response plan for the worst-case scenario in place anywhere on Earth, four-time shuttle astronaut Thomas D. Jones offers a call to arms against the coming cosmic storm. Early last Monday, Richard Kowalski, a University of Arizona astronomer at the Catalina Sky Survey team's 60-in. search telescope atop Mt. Lemmon near Tucson, flashed word to NASA of the discovery of a new Near Earth Object (NEO). The small asteroid,...
  • NASA Team Finds Riches In Meteorite Treasure Hunt...

    03/30/2009 11:38:53 AM PDT · by TaraP · 8 replies · 846+ views
    Space Daily ^ | March 30th, 2009
    Just before dawn on Oct. 7, 2008, an SUV-sized asteroid entered Earth's atmosphere and exploded harmlessly over the Nubian Desert of northern Sudan. Scientists expected the asteroid, called 2008 TC3, had blown to dust in the resulting high-altitude fireball. What happened next excited the scientific community. Peter Jenniskens, a meteor astronomer with the SETI Institute in Mountain View, Calif., who works at NASA's Ames Research Center in Moffett Field, Calif., joined Muawia Shaddad of the University of Khartoum in Sudan to search for possible extraterrestrial remnants from the asteroid. A paper, featured as the cover story in the March 26...
  • Astronomy: The rock that fell to Earth

    03/26/2009 11:07:08 AM PDT · by LibWhacker · 17 replies · 873+ views
    Nature ^ | 3/25/09 | Roberta Kwok
    When an asteroid was spotted heading towards our planet last October, researchers rushed to document a cosmic impact from start to finish for the first time. Roberta Kwok tells the tale.Around midnight on 6 October 2008, a white dot flitted across the screen of Richard Kowalski's computer at an observatory atop Mount Lemmon in Arizona. Kowalski had seen hundreds of such dots during three and a half years of scanning telescope images for asteroids that might hit Earth or come close. He followed the object through the night and submitted the coordinates, as usual, to the Minor Planet Center in...
  • Strange Asteroid, Comets, Fireballs....?

    01/25/2009 5:17:43 PM PST · by TaraP · 36 replies · 3,070+ views
    Spaceweather ^ | Jan 25th, 2009
    STRANGE ASTEROID: Newly-discovered asteroid 2009 BD is slowly passing by Earth today only 400,000 miles away. The small 10m-wide space rock poses no threat, but it merits attention anyway. The orbit of 2009 BD appears to be almost identical to the orbit of Earth. 2009 BD may be a rare co-orbital asteroid, circling the sun in near-tandem with our planet. Extrapolating the motion of 2009 BD into the future, we see that it remains in the vicinity of Earth for many months to come, never receding farther than 0.1 AU (9.3 million miles) until Nov. 2010. Future observations may reveal...
  • Great balls of fire - Astronomers discover and track incoming asteroid for the first time.

    10/08/2008 6:28:48 PM PDT · by neverdem · 10 replies · 805+ views
    Nature News ^ | 8 October 2008 | Ashley Yeager
    A space rock a few metres across exploded over northern Sudan early in the morning of Tuesday 7 October. The small asteroid mostly disintegrated when it collided with Earth's atmosphere, but fragments may have reached the surface. Such an event happens roughly every three months. But this is "the first time we were able to discover and predict an impact before the event", says Donald Yeomans, manager of NASA's Near-Earth Object (NEO) programme at the Jet Propulsion Laboratory (JPL) in Pasadena, California. Incoming! The story began on Sunday evening, when astronomers with the Catalina Sky Survey near Tucson, Arizona, discovered...
  • Small asteroid about to burn up in sky over Africa (above Sudan at 10:46 p.m. EDT Monday)

    10/06/2008 3:22:47 PM PDT · by NormsRevenge · 29 replies · 1,607+ views
    AP on Yahoo ^ | 10/6/08 | AP
    WASHINGTON – Astronomers say a small asteroid is about to make a fiery but harmless dive into Earth's atmosphere early Tuesday morning over Africa. Harvard scientists announced late Monday afternoon that the unnamed asteroid will burn up in the sky, making a fireball that people in northern Africa should be able to see. The rock is between 3 feet and 15 feet in diameter. It's expected to enter Earth's atmosphere above Sudan at 10:46 p.m. EDT Monday, which is just before dawn in Africa.
  • Major Bolide Forecast Tonight; No Damage Expected

    10/06/2008 6:25:00 PM PDT · by InABunkerUnderSF · 49 replies · 1,278+ views
    SkyandTelescope.com ^ | 10/06/2008 | Tony Flanders
    ...Last night (Sunday, October 5th), a telescope on Mount Lemmon, Arizona, detected a tiny moving blip, the signature of a small chunk of rock moving rapidly through space. Twenty-five observations have been done since then by professional and amateur astronomers around the world, and the object's orbit has been pinned down with fairly high precision. It is almost certain to hit Earth's atmosphere around 10:46 p.m. EDT tonight, October 6th. (That's 2:46 a.m. October 7th, Greenwich Mean Time.) The rock is roughly 10 feet (3 meters) across, and it's expected to enter the atmosphere above northern Sudan at about 8...
  • Asteroid hurtling towards Earth

    10/07/2008 3:20:16 PM PDT · by presidio9 · 54 replies · 2,081+ views
    Reuters ^ | October 07, 2008
    AN asteroid discovered today will hit Earth's atmosphere over Sudan in a few hours -SNIP- The asteroid would create a large fireball about 10.46pm EDT (1.46pm AEST) as it burns up, a team at the Harvard-Smithsonian Center for Astrophysics said. "We want to stress that this object is -SNIP- a threat," said Timothy Spahr, director of the International Astronomical Union's Minor Planet Center at Harvard in Massachusetts. "We're excited since this is the first time we have issued a prediction that an object will enter Earth's atmosphere," Dr Spahr said. The asteroid, known as a meteoroid, -SNIP- "A typical meteor...
  • Asteroid to hit Earth's atmosphere in hours

    10/06/2008 7:17:39 PM PDT · by TaraP · 51 replies · 2,027+ views
    courielmail.com,au ^ | October 6th, 2008
    AN asteroid discovered today will hit Earth's atmosphere over Sudan in a few hours but will burn up before it can hit the ground or endanger aircraft, astronomers say. The asteroid would create a large fireball about 10.46pm EDT (1.46pm AEST) as it burns up, a team at the Harvard-Smithsonian Center for Astrophysics said. "We want to stress that this object is not a threat," said Timothy Spahr, director of the International Astronomical Union's Minor Planet Center at Harvard in Massachusetts. "We're excited since this is the first time we have issued a prediction that an object will enter Earth's...
  • ESA selects targets for asteroid-deflecting mission Don Quijote

    09/26/2005 12:17:31 PM PDT · by MHalblaub · 14 replies · 929+ views
    ESA Homepage ^ | 26 September 2005 | Andrés Gálvez
    Don Quijote is an asteroid investigation , geophysical characterisation and deflection technological experiment mission. The mission will contain the following elements: * Two spacecraft which are to be launched in separate interplanetary trajectories. * One spacecraft, which will be referred to as Hidalgo, will impact an asteroid of approximately 500 m diameter at a relative speed of at least 10 km/s. * The other spacecraft, called Sancho, will arrive earlier at the same asteroid along a very different route, perform a rendez-vous and remain in orbit around the asteroid for several months before and after the impact. * Sancho will...
  • Asteroid Buzzes Earth Highlighting Cosmic Blind Spot

    03/21/2002 9:11:00 AM PST · by ex-Texan · 21 replies
    Space.com ^ | 3/21/2002 | Robert Roy Britt
    Asteroid Buzzes Earth Highlighting Cosmic Blind SpotBy Robert Roy Britt Senior Science Writer 3-21-2002 An asteroid large enough to have flattened a city buzzed Earth earlier this month and was not seen until after if flew harmlessly by. The space rock approached Earth in the glare of the Sun, a blind spot that made it impossible to see during the day or night from any terrestrial vantage point. The event illustrates the potential of a surprise hit by an asteroid, astronomers said. The object, now named 2002 EM7, was probably between 40 and 80 meters (130-260 feet) in diameter, said...
  • Is there a Planet X, a ‘massive perturber,’ hidden beyond Pluto?

    09/05/2015 7:46:28 PM PDT · by BenLurkin · 32 replies
    Washington Post ^ | September 3 | Joel Achenbach
    The paper ... noted that a number of large, very remote objects share a similar orbital angle. That's suspicious if you're an astronomer expecting to see a random distribution of objects. The key orbital feature is known, rather obtusely, as the “argument of perihelion.” We're not shy of complicated orbital concepts (we try to toss around the phrase "obliquity of the ecliptic" whenever possible), but this one is not very easy to explain. "The argument of perihelion is the angle at which an object comes to perihelion with respect to the ecliptic plane," Sheppard said in an e-mail. Mike Brown,...
  • How Noam Chomsky and Lawrence Krauss got space exploration wrong

    06/24/2015 9:11:48 PM PDT · by Marcus · 5 replies
    Houston Space Examiner ^ | June 24, 2015 | Mark R. Whittington
    According to a Tuesday piece in Motherboard, Noam Chomsky, a philosopher and political commentator, and Lawrence Krauss, a physicist and cosmologist, had a public dialogue about space exploration. Being both men of the far left, they concluded that space travel should be best left to robots and conducted by governments. The conclusions are the exact opposite of what the prevailing trends are in space policy.
  • NASA says the world is not going to end in September

    08/23/2015 12:53:48 AM PDT · by 2ndDivisionVet · 57 replies
    The Manchester Guardian ^ | August 21, 2015 | Claire Phipps
    Space agency kills off internet rumour by confirming an asteroid strike will not wipe out humanity in the next few weeks, or years, or decades.Good news for those with plans for October and beyond: the Earth will still be in existence. NASA has confirmed – after rumours swept the internet about an imminent asteroid strike expected between 15 and 28 September – that the two-week period in question will be entirely free of Earth-destroying space attacks. The likelihood of any known potentially hazardous asteroid striking the planet within the next 100 years stands at 0.01%, the space agency said in...
  • Humans on Europa: A Plan for Colonies on the Icy Moon

    05/28/2002 8:17:10 PM PDT · by vannrox · 5 replies · 687+ views
    Space.COM ^ | 06 June 2001 | By Don Lipper
    Humans on Europa: A Plan for Colonies on the Icy Moon By Don Lipper Special to SPACE.com posted: 07:00 am ET 06 June 2001 Forewarned is forearmed in science fact and science fiction when it comes to Jupiter's icy moon Europa. Frigid and ice-covered, Europa is believed to harbor a giant liquid ocean beneath its crusty arctic surface, a primordial sea whose tidal motions are driven by Jovian gravity and warmed by intense radiation given off by the giant planet. Yet despite the planet's fearsome environment, members of the Artemis Society, a private venture dedicated establishing a permanent, self-supporting community...
  • Volcano yields new type of diamond

    08/10/2015 6:00:05 PM PDT · by markomalley · 23 replies
    Jeweller Magazine ^ | 8/11/15 | Stephanie Chan
    A recent diamond discovery and technological advancements in outer space have exposed potential new metal and gemstone sources for the jewellery industry.Geologists have reportedly discovered another type of diamond within the lava of the Tolbachik volcano, located on the Kamchatka Peninsula in Russia.According to multiple media reports, the Russian Ministry of Science released a statement that read: “The solidified lava of the Tolbachik eruption [which occurred in 2012–13] carries within it a new and never-before-seen type of diamond ... According to the Russian geologists, these unique diamonds are not formed in the magmatic melt, but are created by volcanic gases...
  • Tracking a mysterious group of asteroid outcasts

    08/05/2015 3:09:35 PM PDT · by BenLurkin · 13 replies
    astronomy.com/ ^ | NASA/JPL
    Distributed at the outer edge of the asteroid belt, the Euphrosynes have an unusual orbital path that juts well above the ecliptic, the equator of the solar system. The asteroid after which they are named, Euphrosyne — an ancient Greek goddess of mirth — is about 156 miles (260 kilometers) across and is one of the 10 largest asteroids in the main belt. Current-day Euphrosyne is thought to be a remnant of a massive collision about 700 million years ago that formed the family of smaller asteroids bearing its name. Scientists think this event was one of the last great...
  • Asteroid worth £3 TRILLION in precious metals set to pass Earth on Sunday

    07/17/2015 1:58:36 PM PDT · by Red Badger · 60 replies
    www.dailymail.co.uk ^ | Updated: 11:50 EST, 17 July 2015 | By Jack Millner
    An asteroid worth a potential £3.5 trillion ($5.4 trillion) is due to pass by Earth on Sunday, and you can watch it live from 11pm UK time (6.30pm ET). Asteroid 2011 UW-158's fly-by will be streamed live on the internet from an observatory in the Canary Islands. The space rock has attracted the attention of asteroid mining company Planetary Resources, because it is thought to have a 100 million ton core of platinum that the company might one day want to exploit. Asteroid 2011 UW-158 will pass within 1.5 million miles (2.4 million km) from Earth on Sunday - 30...
  • How NASA Will Save the World from Giant, Killer Asteroids

    06/19/2015 5:00:23 AM PDT · by lbryce · 27 replies
    CNN ^ | June 18, 2015 | Matthew Hoye
    It may sound like a science fiction movie, but in a small conference room at the Goddard Space Flight Center, a tight-knit group of top NASA scientists is coming up with new ways to protect our planet from killer asteroids. The idea is to repurpose and build on technologies being developed for other space missions. How big is the threat from asteroids? Well, Jason Kessler, NASA's director of the Grand Challenge, says that as of Wednesday morning asteroid hunters around the world have identified and are tracking 12,706 Near Earth Objects (NEOs) -- or asteroids - that could come close...
  • Mars theory cites episodes of wet asteroids

    12/07/2002 9:19:26 PM PST · by farmfriend · 12 replies · 165+ views
    Seatle Times ^ | December 06, 2002 | Paul Recer
    Mars theory cites episodes of wet asteroids By Paul Recer The Associated Press WASHINGTON — Mars never had oceans as some researchers claim, but instead is a cold, dry planet that was pounded by water-bearing asteroids and showered with scalding rain that carved vast gullies and valleys, a new study claims. The study, reported this week in the journal Science, sheds new light on a continuing debate by Mars researchers about how much water was on Mars, where it went and how it formed the planet's intricate pattern of canyons, riverbeds and deltas. Using Mars photos and computer simulations, researchers...
  • Close Encounter of the Asteroid Kind – 2015 HD1 Skims By Earth Tonight

    04/20/2015 8:55:50 AM PDT · by BenLurkin · 14 replies
    Around 3 a.m. (CDT) tomorrow morning April 21, a 50-foot-wide asteroid will hurdle just 0.2 lunar distances or 45,600 miles over your bed. The Mt. Lemmon Survey, based in Tucson, Arizona, snagged the space rock Saturday. 2015 HD1 is about as big as a full grown T-rex through not nearly as scary, since it will safely miss Earth … but not by much.
  • Bigger than Apophis: Dangerous 300+ meter asteroid to cross Earth orbit every 3 years

    12/08/2014 10:42:03 AM PST · by Red Badger · 26 replies
    Russia Today.com ^ | December 07, 2014 19:42 | Staff
    Scientists have calculated that 2014 UR116 asteroid will fly in dangerous proximity to Earth every three years. If it collides with the planet the energy of the explosion could be a thousand times greater than the impact of the Chelyabinsk meteorite. Vladimir Lipunov, a leading scientist on the team which discovered the asteroid this October, says the scientists now know its orbit and its period which is 3 years, but they cannot say precisely when the asteroid will approach the Earth. “We should track it constantly. Because if we have a single mistake, there will be a catastrophe. The consequences...