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Keyword: impacts

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  • Supervolcanoes likely triggered externally

    11/05/2015 9:03:26 AM PST · by JimSEA · 42 replies
    Science Daily ^ | November 4, 2015 | University of Illinois at Urbana-Champaign
    Supervolcanoes, massive eruptions with potential global consequences, appear not to follow the conventional volcano mechanics of internal pressure building until the volcano blows. Instead, a new study finds, such massive magma chambers might erupt when the roof above them cracks or collapses. Knowledge of triggering mechanisms is crucial for monitoring supervolcano systems, including ones that lie beneath Yellowstone National Park and Long Valley, California, according to the study led by Patricia Gregg, University of Illinois professor of geology, in collaboration with professor Eric Grosfils of Pomona College and professor Shan de Silva of Oregon State University. The study was published...
  • 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...
  • Space news: Fireballs light up Jupiter

    09/13/2010 9:38:58 AM PDT · by granite · 22 replies · 1+ views
    Lake County News ^ | Sunday, 12 September 2010 | Written by Dr. Tony Phillips
    A color composite image of the June 3, 2010, Jupiter impact flash. Credit: Anthony Wesley observing from Broken Hill, Australia. In a paper published Thursday in the Astrophysical Journal Letters, a group of professional and amateur astronomers announced that Jupiter is getting hit surprisingly often by small asteroids, lighting up the giant planet's atmosphere with frequent fireballs. "Jupiter is a big gravitational vacuum cleaner," said co-author and JPL astronomer Glenn Orton. "It is clear now that relatively small objects left over from the formation of the solar system 4.5 billion years ago still hit Jupiter frequently." The impacts are...
  • 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...
  • Craters on Vesta and Ceres could hold key to Jupiter’s age

    09/19/2009 4:03:05 PM PDT · by Fred Nerks · 15 replies · 772+ views
    SCIENCE CENTRIC ^ | 14 September 2009 00:02 GMT | by Anita Heward
    Crater patterns on Vesta and Ceres could help pinpoint when Jupiter began to form during the evolution of the early Solar System. A study modelling the cratering history of the largest two objects in the asteroid belt, which are believed to be among the oldest in the Solar System, indicates that the type and distribution of craters would show marked changes at different stages of Jupiter’s development. Results will be presented by Dr Diego Turrini at the European Planetary Science Congress in Potsdam, Germany, on Monday 14 September. The study, carried out by scientists at the Italian National Institute for...
  • 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...
  • 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...
  • Stars Passing Close to the Sun

    01/02/2015 11:41:56 AM PST · by LibWhacker · 32 replies
    Centauri Dreams ^ | 1/2/15 | Paul Gilster
    Stars Passing Close to the Sunby Paul Gilster on January 2, 2015 Every time I mention stellar distances I’m forced to remind myself that the cosmos is anything but static. Barnard’s Star, for instance, is roughly six light years away, a red dwarf that was the target of the original Daedalus starship designers back in the 1970s. But that distance is changing. If we were a species with a longer lifetime, we could wait about eight thousand years, at which time Barnard’s Star would close to less than four light years. No star shows a larger proper motion relative to...
  • Scientists Have Underestimated The Likelihood Of City-Killing Asteroids Hitting Earth

    04/28/2014 2:50:08 PM PDT · by blam · 49 replies
    BI - Reuters ^ | 4-28-2014 | Irene Klotz, Reuters
    Scientists Have Underestimated The Likelihood Of City-Killing Asteroids Hitting Earth Reuters Irene Klotz, Reuters Apr. 28, 2014, 2:59 PM The chance of a city-killing asteroid striking Earth is higher than scientists previously believed, a non-profit group building an asteroid-hunting telescope said on Tuesday. A global network that listens for nuclear weapons detonations detected 26 asteroids that exploded in Earth's atmosphere from 2000 to 2013, data collected by the Comprehensive Nuclear Test Ban Treaty Organization shows. The explosions include the Feb. 15, 2013, impact over Chelyabinsk, Russia, which left more than 1,000 people injured by flying glass and debris. "There is...
  • 1 million fps Slow Motion video of bullet impacts

    07/16/2010 9:36:51 PM PDT · by fuzzybutt · 16 replies
    Youtube.com ^ | 9/28/2009 | Youtube.com
    For those of you that have not seen it this is a great video of various types of bullets in super slow motion. The techno music is a bit much just turn off the sound and enjoy!
  • Arnold Schwarzenegger defends job impacts of AB 32

    03/09/2010 4:49:14 PM PST · by NormsRevenge · 7 replies · 312+ views
    SaC bee ^ | 3/9/10 | Steve Weigand
    Gov. Arnold Schwarzenegger defended the state's greenhouse gas reduction law today, dismissing a Legislative Analyst's conclusion that determined the measure would cost the state jobs in the near term. "I travel up and down the state, unlike others that only have theoretical opinions," the governor said during a brief sidewalk news conference after giving a speech at a downtown Sacramento hotel. "I see first hand ... that all kinds of (green industry) places want to expand, all we have to do is give them the incentives, the tax incentives and the job creation packages. I know that AB 32 will...
  • "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,...
  • Coast-to-Coast Storm Impacts Next Week

    02/14/2009 8:23:05 PM PST · by NormsRevenge · 38 replies · 2,027+ views
    The latest storm to hit California with heavy rain and mountain snow this weekend will have far-reaching effects across the country next week. This storm has the potential to spark another round of severe storms in the southern Plains and Deep South and spread a swath of heavy snow from the Midwest to the Northeast.
  • The earth's magnetic field impacts climate: Danish study

    01/12/2009 6:33:01 PM PST · by NormsRevenge · 70 replies · 3,275+ views
    AFP on Yahoo ^ | 1/12/09 | AFP
    COPENHAGEN (AFP) – The earth's climate has been significantly affected by the planet's magnetic field, according to a Danish study published Monday that could challenge the notion that human emissions are responsible for global warming. "Our results show a strong correlation between the strength of the earth's magnetic field and the amount of precipitation in the tropics," one of the two Danish geophysicists behind the study, Mads Faurschou Knudsen of the geology department at Aarhus University in western Denmark, told the Videnskab journal. He and his colleague Peter Riisager, of the Geological Survey of Denmark and Greenland (GEUS), compared a...
  • Models Look Good When Predicting Climate Change

    04/03/2008 2:56:03 PM PDT · by cogitator · 11 replies · 141+ views
    Terra Daily ^ | 04/03/2008 | Staff Writers
    The accuracy of computer models that predict climate change over the coming decades has been the subject of debate among politicians, environmentalists and even scientists. A new study by meteorologists at the University of Utah shows that current climate models are quite accurate and can be valuable tools for those seeking solutions on reversing global warming trends. Most of these models project a global warming trend that amounts to about 7 degrees Fahrenheit over the next 100 years. The study titled "How Well do Coupled Models Simulate Today's Climate?" is due to be published this Friday in the Bulletin of...
  • Bush: Further Delay in War-Spending Bill Will Impact Troops

    04/15/2007 8:15:11 AM PDT · by SandRat · 22 replies · 783+ views
    American Forces Press Service ^ | Steven Donald Smith
    WASHINGTON, April 15, 2007 – President Bush yesterday once again called for Congress to send him a clean emergency war-spending bill that does not include tacked on funding measures and a timeline for U.S. troop withdrawal from Iraq. Without the supplemental funds requested by the White House in early February, military officials will be compelled to shift money around to fill expenditure disparities, Bush said during his weekly radio address to the nation. “In the next few days, our military leaders will notify Congress that they will be forced to transfer $1.6 billion from other military accounts to make...
  • Court ruling impacts News 4 Investigators Child Sex Sting

    05/25/2006 10:01:21 PM PDT · by SandRat · 10 replies · 717+ views
    Arizona's highest court has ruled to throw out charges against a man alleged to have arranged a sexual encounter with a 13-year old girl. That girl was really an investigative reporter. But, let's get to the facts first. Today's ruling reads... "the luring statute requires that an actual minor or peace officer posing as a minor be lured." The News 4 Investigators conducted a different type of child sex sting late last year. Two men were arrested and are awaiting trial. How will this ruling affect their pending cases? News 4 Investigators worked with Perverted Justice, an internet watch group...
  • Mothers Against Illegal Aliens protest focused on immigration impacts

    02/19/2006 12:32:55 PM PST · by SandRat · 14 replies · 532+ views
    Sierra Vista Herald, Sierra Vista Arizona ^ | Feb 19, 2006 | GENTRY BRASWELL
    Cynthia and Richard Humphries from Elfrida voice their opinion as they participate in Saturday's Mother's Against Illegal Aliens rally along Highway 92 in Hereford. (By Mark Levy-Herald/Review) Mothers Against Illegal Aliens protest focused on immigration impactsBY GENTRY BRASWELLHERALD/REVIEW SIERRA VISTA — The founder of Mothers Against Illegal Aliens says the ungoverned flood of illegal immigration is ruining opportunities for “the legal families of America.” Phoenix resident Michelle Dallacroce said she founded the organization officially in January. A dozen or so demonstrators gathered Saturday morning along Highway 92 near milepost 331 in the Hunter Canyon area protesting poor immigration policy...
  • Lewis And Clark Notes Reveal History Of Human Impacts

    11/21/2003 9:06:06 AM PST · by blam · 21 replies · 243+ views
    Scienece Daily ^ | 11-20-2003 | OSU
    Source: Oregon State University Date: 2003-11-20 Lewis And Clark Notes Reveal History Of Human Impacts CORVALLIS – Native Americans had a major impact on the wildlife of the American West for hundreds of years prior to European settlement, a report from Oregon State University indicates, based on data from one of the most accurate surveys of its time – the journals of Lewis and Clark. It is a myth that vast areas of the West existed in some sort of pristine state, largely unaffected by humans until the 1800s, the research concludes. In fact, the larger wildlife such as deer,...
  • Evidence Of Tunguska-Type Impacts Over The Pacific Basin Around The Year 1178 AD

    01/26/2003 9:36:14 AM PST · by blam · 62 replies · 4,703+ views
    SIS Conference ^ | Emilio Spedicato
    Evidence Of Tunguska-type Impacts Over The Pacific Basin Around The Year 1178 A.D. Emilio Spedicato University of Bergamo, Piazza Rosate 2, 24129 Bergamo, Italy, email: emilio@ibguniv.unibg.it In year 1178 A.D., as related by Clube and Napier in their book The Cosmic Serpent, a strange event was observed to affect the Moon, which may be explained by a large impact on the hidden face, originating the Giordano Bruno crater. A number of observations suggest that catastrophic cometary or meteoritic impacts around the same time also affected the Pacific basin: Maori legends of great fires destroying forests and the moa bird, to...
  • Earth's Volcanism Linked To Meteorite Impacts

    12/13/2002 8:36:39 AM PST · by blam · 34 replies · 1,459+ views
    New Scientist ^ | 12-13-2002 | Kate Ravilious
    Earth's volcanism linked to meteorite impacts 14:31 13 December 02 Exclusive from New Scientist Print EditionSpace rocks are blamed for violent eruptions (Image: GETTY) Large meteorite impacts may not just throw up huge dust clouds but also punch right through the Earth's crust, triggering gigantic volcanic eruptions. The idea is controversial, but evidence is mounting that the Earth's geology has largely been driven by such events. This would also explain why our planet has so few impact crater remnants. Counting the number of asteroids we see in the sky suggests that over the past 250 million years, Earth should have...
  • Evidence for Major Impact Events in the late Third Millennium BC

    09/04/2002 4:48:54 PM PDT · by vannrox · 90 replies · 15,336+ views
    The Climax of a Turbulent Millennium: Evidence for Major Impact Events in the late Third Millennium BC Timo Niroma, Helsinki, Finland The First Intermediate PeriodThe Curse of AkkadTroy IIgThird Millennium BC Climate Change and Old World CollapseNatural Catastrophes during Bronze Age Civilisations Two separate cataclysmsSodom and GomorrahWhere did the impacts occur? The First Intermediate Period Selections from "The Egyptians" by C. Aldred (London 1987). "At this distance of time, the overthrow of the Old Kingdom at the end of the Sixth Dynasty has all the appearance of being sudden and complete. "Recent research has attributed the abrupt nature of...