Keyword: jupiter

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  • Astronomy Picture of the Day -- Jupiter's Clouds from New Horizons

    06/26/2016 10:54:07 AM PDT · by SunkenCiv · 12 replies
    NASA ^ | Sunday, June 26, 2016 | (see photo credit)
    Explanation: The New Horizons spacecraft took some stunning images of Jupiter on its way out to Pluto. Famous for its Great Red Spot, Jupiter is also known for its regular, equatorial cloud bands, visible through even modest sized telescopes. The featured image, horizontally compressed, was taken in 2007 near Jupiter's terminator and shows the Jovian giant's wide diversity of cloud patterns. On the far left are clouds closest to Jupiter's South Pole. Here turbulent whirlpools and swirls are seen in a dark region, dubbed a belt, that rings the planet. Even light colored regions, called zones, show tremendous structure, complete...
  • Astronomy Picture of the Day -- Cirrus over Paris

    06/22/2016 4:45:04 AM PDT · by SunkenCiv · 4 replies
    NASA ^ | Wednesday, June 22, 2016 | (see photo credit)
    Explanation: What's that over Paris? Cirrus. Typically, cirrus clouds appear white or gray when reflecting sunlight, can appear dark at sunset (or sunrise) against a better lit sky. Cirrus are among the highest types of clouds and are usually thin enough to see stars through. Cirrus clouds may form from moisture released above storm clouds and so may herald the arrival of a significant change in weather. Conversely, cirrus clouds have also been seen on Mars, Jupiter, Saturn, Titan, Uranus, and Neptune. The featured image was taken two days ago from a window in District 15, Paris, France, Earth. The...
  • Astronomy Picture of the Day -- Three Planets from Pic du Midi

    06/02/2016 4:03:22 AM PDT · by SunkenCiv · 9 replies
    NASA ^ | Thursday, June 02, 2016 | (see photo credit)
    Explanation: Seen any planets lately? All three planets now shining brightly in the night sky are imaged in these panels, captured last week with the 1 meter telescope at Pic du Midi Observatory in the French Pyrenees. Near opposition and closest to Earth on May 30, Mars is presently offering the best ground-based photo-ops in the last decade. The sharp image finds clouds above the Red Planet's north pole (top) and towering volcanos near its right limb. Saturn reaches its own opposition tonight, its bright rings and gaps clearly revealed in the telescopic portrait. Jupiter is currently highest during the...
  • Astronomy Picture of the Day -- The Surface of Europa

    05/19/2016 10:17:59 AM PDT · by SunkenCiv · 11 replies
    NASA ^ | Thursday, May 19, 2016 | (see photo credit)
    Explanation: An enhanced-color view, this image covers a 350 by 750 kilometer swath across the surface of Jupiter's tantalizing moon Europa. The close-up combines high-resolution image data with lower resolution color data from observations made in 1998 by the Galileo spacecraft. Smooth ice plains, long fractures, and jumbled blocks of chaos terrain are thought to hide a deep ocean of salty liquid water beneath. Though the ice-covered alien ocean world is outside the Solar System's habitable zone, new studies show the potential chemistry driving its oxygen and hydrogen production, a key indicator of the energy available for life, could produce...
  • Astronomy Picture of the Day -- Halo from Atacama

    05/18/2016 10:27:18 AM PDT · by SunkenCiv · 3 replies
    NASA ^ | Wednesday, May 18, 2016 | (see photo credit)
    Explanation: Influenced by the strong Pacific El Nino, cloudy skies have more often come to Chile's high Atacama Desert this season, despite its reputation as an astronomer's paradise. Located in one of the driest, darkest places on planet Earth, domes of the region's twin 6.5 meter Magellan telescopes of Carnegie Las Campanas Observatory were closed on May 13. Still, a first quarter Moon and bright stars shine through in this panoramic night skyscape, the lunar disk surrounded by a beautiful, bright halo. The angular radius of the halo is 22 degrees. Not determined by the brightness or phase of the...
  • How Do We Terraform Jupiter’s Moons?

    04/22/2016 11:30:11 PM PDT · by BenLurkin · 39 replies
    Within the Jupiter system, there are 67 confirmed moons of varying size, shape and composition. In honor of Jupiter’s namesake, they are sometimes collectively referred to as the Jovians. Of these, the four largest – Io, Europa, Ganymede and Callisto – are known as the Galileans (in honor of their founder, Galileo Galilei). These four moons are among the largest in the Solar System, with Ganymede being the largest of them all, and even larger than the planet Mercury. In addition, three of these moons – Europa, Ganymede and Callisto – are all believed or known to have interior oceans...
  • Watch: FNC’s Wallace Presses Lewandowski for Apology to Michelle Fields

    04/17/2016 4:14:51 PM PDT · by Hojczyk · 40 replies
    Breitbart News ^ | April 17,2016 | by PAM KEY
    On this weeks broadcast of “Fox News Sunday,” host Chris Wallace repeatedly pressed Republican presidential candidate Donald Trump’s campaign manager Corey Lewandowski to apologize for an incident involving former Breitbart News reporter Michelle Fields at a Jupiter, FL campaign event on March 6. Lewandowski said, “I’ve never spoken to Ms. Fields. I turned over my phone records to the Palm Beach County District Attorney’s office, it clearly shows I called her phone number that evening, when I got back and read about this on the Twitter feed. I’d be happy to have a conversation with her. But to apologize to...
  • 'I thought she was drunk': What witness to Trump campaign aide's alleged battery told police ...

    04/16/2016 5:49:50 AM PDT · by FR_addict · 67 replies
    DailyMail.com ^ | April 14, 2016 | David Martosko
    Prosecutors in Palm Beach County, Florida announced Thursday that a potential criminal battery case against Donald Trump's campaign manager is dead in the water, calling into question the version of events presented by a reporter who filed the criminal complaint. One witness told police his eyes were fixed on Michelle Fields, the journalist who claimed Corey Lewandowski battered her – and her actions 'looked like a fraudulent slip-and-fall.' Police in Jupiter, Florida released video of their interview with Michael Spellman on Thursday, along with a more formal statement that he wrote immediately afterward. Spellman, the president of a glass technology...
  • Astronomy Picture of the Day -- Auroras and the Magnetosphere of Jupiter

    04/06/2016 7:01:07 AM PDT · by SunkenCiv · 3 replies
    NASA ^ | Wednesday, April 06, 2016 | (see photo credit)
    Explanation: Jupiter has auroras. Like near the Earth, the magnetic field of our Solar System's largest planet compresses when impacted by a gust of charged particles from the Sun. This magnetic compression funnels charged particles towards Jupiter's poles and down into the atmosphere. There, electrons are temporarily excited or knocked away from atmospheric gases, after which, when de-exciting or recombining with atmospheric ions, auroral light is emitted. The featured illustration portrays the magnificent magnetosphere around Jupiter in action. In the inset image released last month, the Earth-orbiting Chandra X-ray Observatory shows unexpectedly powerful X-ray light emitted by Jovian auroras, depicted...
  • Palm Beach County State Attorney's Statement on Corey Lewandowski's Arrest

    03/30/2016 7:08:48 PM PDT · by freepersup · 57 replies
    Dave Aronberg's Facebook Page ^ | 30 March, 2016 | self
    Dave Aronberg 8 hours ago Here's my statement regarding the charges against Corey Lewandowski by the Jupiter Police Department: Some media outlets have reported that this office has brought charges against Corey Lewandowski, campaign manager for Donald Trump. These reports are false. Our office has taken no action against Mr. Lewandowski. The matter was investigated and charged by the Jupiter Police Department, not this office. We will await the file from the Jupiter Police Department and make a decision on how to proceed in this matter before Mr. Lewandowski's May 4th arraignment. Law enforcement charges on a probable cause standard....
  • Astronomy Picture of the Day -- Close Comet and Large Magellanic Cloud

    03/17/2016 1:49:50 AM PDT · by SunkenCiv · 11 replies
    NASA ^ | Thursday, March 17, 2016 | (see photo credit)
    Explanation: Sporting a surprisingly bright, lovely green coma Comet 252P/Linear poses next to the Large Magellanic Cloud in this southern skyscape. The stack of telephoto exposures was captured on March 16 from Penwortham, South Australia. Recognized as a Jupiter family periodic comet, 252P/Linear will come close to our fair planet on March 21, passing a mere 5.3 million kilometers away. That's about 14 times the Earth-Moon distance. In fact, it is one of two comets that will make remarkably close approaches in the next few days as a much fainter Comet Pan-STARRS (P/2016 BA14) comes within 3.5 million kilometers (9...
  • ..Fields and Ben Shapiro Resign from Breitbart after Fudging Story about Trump Campaign Manager

    03/14/2016 6:24:25 AM PDT · by bobsunshine · 218 replies
    GatewayPundit ^ | March 14, 2016 | Jim Hoft
    Breitbart reporter Michelle Fields made headlines last week when she claimed Trump Campaign Manager Corey Lewandowski grabbed her and threw her down on the ground at the Jupiter, Florida victory speech on Tuesday night. Video now proves that Fields exaggerated the story for some strange reason.
  • ANTI-TRUMP REPORTER CRIED WOLF! NEW VIDEO Shows Michelle Fields Not Even Bumped

    03/13/2016 8:00:26 AM PDT · by Enlightened1 · 87 replies
    GP ^ | 03/13/16 | Jim Hoft
    WOW! What the hell, Michelle?Breitbart reporter caught fabricating story about Donald Trump Campaign Manager Corey Lewandowski. Michelle Fields made headlines when she said Lewandowski grabbed her and threw her down on the ground at the Jupiter, Florida victory speech on Tuesday night. The Gateway Pundit’s Kristinn Taylor was in the room at the time and did not see the incident in question. He was the last reporter to film Corey closing up the event with reporters. Breitbart reporter Michelle Fields filed criminal assault charges with Jupiter, Florida police against Donald Trump’s campaign manager Corey Lewandowski on Friday several days after...
  • Search Narrows For Planet Nine

    02/25/2016 8:57:45 AM PST · by LibWhacker · 32 replies
    Universe Today ^ | 2/25/16 | Bob King
    Based on a careful study of Saturn's orbit and using mathematical models, French scientists were able to whittle down the search region for Planet Nine to "possible" and "probable" zones. Source: CNRS, Cote d'Azur and Paris observatories. Created by the author Astronomy, Cassini, Planet News, Solar SystemSearch Narrows For Planet Nine 25 Feb , 2016 by Bob King An imagined view from Planet Nine looking back toward the Sun. Astronomers think the massive, distant planet is gaseous, similar to the other giant planets in our Solar System. Credit: Wikipedia Last month, planetary scientists Mike Brown and Konstantin Batygin of...
  • Don't Blame 'Planet Nine' for Earth's Mass Extinctions

    01/26/2016 8:03:21 AM PST · by BenLurkin · 24 replies
    space.com ^ | 01/25/2016 | mike wall
    Planet Nine - a newly proposed but not yet confirmed world perhaps 10 times more massive than Earth that's thought to orbit far beyond Pluto — probably could not have triggered such "death from the skies" events, researchers said. Planet Nine likely has an elliptical orbit, coming within 200 to 300 astronomical units (AU) of the sun at its closest approach and getting as far away as 600 to 1,200 AU, Brown said. (One AU is the distance from Earth to the sun - about 93 million miles, or 150 million kilometers). Neptune orbits about 30 AU from the sun,...
  • Researchers find evidence of a real ninth planet

    01/20/2016 7:52:49 PM PST · by Utilizer · 31 replies
    Phys.org ^ | January 20, 2016 | Kimm Fesenmaier
    Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, which the researchers have nicknamed Planet Nine, has a mass about 10 times that of Earth and orbits about 20 times farther from the sun on average than does Neptune (which orbits the sun at an average distance of 2.8 billion miles). In fact, it would take this new planet between 10,000 and 20,000 years to make just one full orbit around the sun. The researchers, Konstantin Batygin and Mike Brown, discovered the planet's existence through mathematical modeling...
  • There's a ninth planet in our solar system - we just can't see it yet, study says

    01/20/2016 1:43:51 PM PST · by BenLurkin · 39 replies
    l a times ^ | 01/20/2016 | amina khan
    Scientists have been wondering whether a "Planet X" exists in the dim regions far beyond the known planets, but it has remained largely speculative.... That started to change in March 2014, when a pair of astronomers announced that they’d discovered a brand-new dwarf planet, 2012 VP113, beyond the well-populated edge of the Kuiper belt, whose main mass stretches from Neptune’s orbit around 30 astronomical units (or 30 times the Earth-Sun distance) out to 50 astronomical units. It wasn’t the only such object: Sedna, a 600-mile-wide rock discovered in 2003, also boasted this far-out orbit, and it seemed to be making...
  • Ninth Planet May Exist in Solar System Beyond Pluto, New Evidence Suggests

    01/20/2016 12:01:57 PM PST · by presidio9 · 50 replies
    The New York Times ^ | JAN. 20, 2016 | KENNETH CHANG
    There might be a ninth planet in the solar system after all - and it is not Pluto. Two astronomers reported on Wednesday that they had compelling signs of something bigger and farther away — something that would definitely satisfy the current definition of a planet, where Pluto falls short. "We are pretty sure there's one out there," said Michael E. Brown, a professor of planetary astronomy at the California Institute of Technology. What Dr. Brown and a fellow Caltech professor, Konstantin Batygin, have not done is actually find that planet, so it would be premature to revise mnemonics of...
  • Scientists may have found Planet X, the mysterious presence that has eluded astronomers

    12/12/2015 1:40:04 AM PST · by Squawk 8888 · 66 replies
    National Post ^ | December 11, 2015 | Sarah Kaplan
    It’s a big, dark presence at the farthest reaches of our solar system, a mysterious force powerful enough to skew the paths of planets in orbit and yet so subtle that it slips undetected past even the most powerful telescopes on Earth. For centuries, it has eluded some of the most brilliant minds in astronomy — some say it even destroyed one. It’s the subject of endless calculations and rampant speculation, crackpot theories and countless hours spent gazing, fruitlessly, at the night sky. It’s known as Planet X. And on Tuesday, a group of astronomers said they’d found not just...
  • 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,...
  • NASA Finds Another Solar System Mystery based on Stardust mission

    03/13/2006 6:19:02 PM PST · by NormsRevenge · 22 replies · 1,261+ views
    ap on San Diego Union Tribune ^ | 3/13/06 | Pam Easton - ap
    SPACE CENTER, Houston – NASA scientists have a new mystery to solve: How did materials formed by fire end up on the outermost reaches of the solar system, where temperatures are the coldest? The materials were contained in dust samples captured when the robotic Stardust spacecraft flew past the comet Wild 2 in 2004. A 100-pound capsule tied to a parachute returned the samples to Earth in January. The samples include minerals such as anorthite, which is made up of calcium, sodium, aluminum and silicate; and diopside, made of calcium magnesium and silicate. Such minerals only form in very high...
  • The Curious Case of Missing Asteroids

    03/03/2009 7:31:32 PM PST · by SunkenCiv · 38 replies · 720+ views
    NASA Solar System Exploration ^ | February 25, 2009 | Lori Stiles
    University of Arizona scientists have uncovered a curious case of missing asteroids. The main asteroid belt is a zone containing millions of rocky objects between the orbits of Mars and Jupiter. The scientists find that there ought to be more asteroids there than researchers observe. The missing asteroids may be evidence of an event that took place about 4 billion years ago, when the solar system's giant planets migrated to their present locations. UA planetary sciences graduate student David A. Minton and UA planetary sciences professor Renu Malhotra say missing asteroids is an important piece of evidence to support an...
  • The Chaotic Genesis of Planets [ FREE PREVIEW ]

    05/01/2008 9:35:33 AM PDT · by SunkenCiv · 18 replies · 48+ views
    Scientific American ^ | April 2008 | Douglas N. C. Lin
    ...planets are the most diverse and intricate class of object in the universe. No other celestial bodies support such a complex interplay of astronomical, geologic, and chemical and biological processes... The worlds of our solar system... hardly prepared us for the discoveries of the past decade, during which astronomers have found more than 200 planets. The sheer diversity of these bodies' masses, sizes, compositions and orbits challenges those of us trying to fathom their origins. When I was in graduate school in the 1970s, we tended to think of planet formation as a well-ordered, deterministic process -- an assembly line...
  • Were Mercury and Mars separated at birth?

    01/19/2009 3:32:30 PM PST · by SunkenCiv · 23 replies · 542+ views
    New Scientist ^ | Monday, January 19, 2009 | unattributed
    Line up Mercury, Venus, Earth and Mars according to their distance from the sun and you'll see their size distribution is close to symmetrical, with the two largest planets between the two smallest. That would be no coincidence -- if the pattern emerged from a debris ring around the sun. Brad Hansen of the University of California, Los Angeles, built a numerical simulation to explore how a ring of rocky material in the early solar system could have evolved into the planets. He found that two larger planets typically form near the inner and outer edges of the ring, corresponding...
  • Astronomy Picture of the Day -- Moons and Jupiter

    03/04/2016 12:25:38 PM PST · by SunkenCiv · 4 replies
    NASA ^ | March 03, 2016 | (see photo credit)
    Explanation: Some of the Solar System's largest moons rose together on February 23. On that night, a twilight pairing of a waning gibbous Moon and Jupiter was captured in this sharp telescopic field of view. The composite of short and long exposures reveals the familiar face of our fair planet's own large natural satellite, along with a line up of the ruling gas giant's four Galilean moons. Left to right, the tiny pinpricks of light are Callisto, Io, Ganymede, [Jupiter], and Europa. Closer and brighter, our own natural satellite appears to loom large. But Callisto, Io, and Ganymede are actually...
  • Astronomy Picture of the Day -- Five Planets at Castell de Burriac

    02/06/2016 7:12:45 PM PST · by SunkenCiv · 20 replies
    NASA ^ | February 06, 2016 | (see photo credit)
    Explanation: February's five planet line-up stretches across a clear sky in this predawn scene. A hilltop Castell de Burriac looms in the foreground, overlooking the town of Cabrera de Mar near Barcelona, Spain, planet Earth. The mosaicked, panoramic image looks south. It merges three different exposure times to record a bright Last Quarter Moon, planets, seaside city lights, and dark castle ruins. Seen on February 1st the Moon was near Mars on the sky. But this week early morning risers have watched it move on, passing near Saturn and finally Venus and Mercury, sliding along near the ecliptic toward the...
  • The Many Mysteries of Uranus

    02/02/2016 11:09:42 PM PST · by Timpanagos1 · 39 replies
    The Atlantic ^ | 2/2/16 | DAVID MOSCATO
    The best planet in our solar system is not, as Adrienne LaFrance claimed several months ago, Jupiter. Nor is it Saturn, as Ross Andersen argued in a rebuttal last month. I teach science for a living, which means I have a hard time allowing misinformation to pass by uncorrected—and after reading those articles, I knew I had to step in before any more intellectual damage was done. The best planet is Uranus—Uranus the bizarre. Uranus the unique.
  • Astronomy Picture of the Day -- A Five Planet Dawn [see my preemptive comment]

    01/30/2016 3:23:39 AM PST · by SunkenCiv · 21 replies
    NASA ^ | January 30, 2016 | (see photo credit)
    Explanation: As January closes and in the coming days of February, early morning risers can spot the five naked-eye planets before dawn. Though some might claim to see six planets, in this seaside panoramic view all five celestial wanderers were found above the horizon along with a bright waning gibbous Moon on January 27. Nearly aligned along the plane of the ecliptic, but not along a line with the Sun, the five planets are spread well over 100 degrees across the sky. Just arriving on the predawn scene, fleeting Mercury stands above the southeastern horizon in the golden light of...
  • Babylonians Were Using Geometry Centuries Earlier Than Thought

    01/28/2016 2:56:35 PM PST · by BenLurkin · 35 replies
    smithsonian ^ | 01/28/2016 | Jesse Emspak
    Mathieu Ossendrijver of Humboldt University in Berlin found the tablet while combing through the collections at the British Museum. The written record gives instructions for estimating the area under a curve by finding the area of trapezoids drawn underneath. Using those calculations, the tablet shows how to find the distance Jupiter has traveled in a given interval of time. Until now, this kind of use of trapezoids wasn't known to exist before the 14th century. ... By 400 B.C. Babylonian astronomers had worked out a coordinate system using the ecliptic, the region of the sky the sun and planets move...
  • Spot five planets at once and a transit of Mercury in 2016

    12/31/2015 11:16:31 PM PST · by BenLurkin · 3 replies
    Batlimore Sun ^ | 12/31/2015 | Scott Dance
    Skywatchers will have many opportunities in 2016 to see just how small we are in the universe. Four days into the new year, hundreds of meteors will dance across the night skies.... Come September, an outer ring of the sun's annular eclipse will be visible across Africa. In between, there will be spectacular shooting stars, super moons, and lunar eclipses to take in. ... From about Jan. 20 to Feb. 20, all five planets that are visible to the naked eye — Mercury, Venus, Mars, Jupiter and Saturn — will occupy the morning sky. This hasn't happened since 2005, according...
  • Earth-Smashing Space Rocks Undercounted

    12/23/2015 10:12:19 PM PST · by BenLurkin · 16 replies
    discovery.com ^ | 12/22/2015 | Mariette Le Roux, AFP
    Most studies of potential Earth-smashers focus on objects in the asteroid belt roughly between Mars, Earth's outside neighbour, and Jupiter on its other flank, said the researchers. But they noted that the discovery in the last two decades of hundreds of giant comets dubbed centaurs, albeit with much larger orbits, requires expanding the list of potential hazards. These balls of ice and dust, typically 50-100 kilometres (31-62 miles) wide, have unstable, elliptical orbits that start way beyond Neptune, the most distant planet from the Sun. Their paths cross those of the giant planets Jupiter, Saturn, Uranus and Neptune, whose gravity...
  • Astronomy Picture of the Day -- When Gemini Sends Stars to Paranal

    12/12/2015 9:52:57 PM PST · by SunkenCiv · 6 replies
    NASA ^ | December 13, 2015 | (see photo credit)
    Explanation: From a radiant point in the constellation of the Twins, the annual Geminid meteor shower rain down on planet Earth. Tonight, the Geminds reach their peak and could be quite spectacular. The featured blended image, however, captured the shower's impressive peak in the year 2012. The beautiful skyscape collected Gemini's lovely shooting stars in a careful composite of 30 exposures, each 20 seconds long, from the dark of the Chilean Atacama Desert over ESO's Paranal Observatory. In the foreground Paranal's four Very Large Telescopes, four Auxillary Telescopes, and the VLT Survey telescope are all open and observing. The skies...
  • Astronomy Picture of the Day -- Planets of the Morning

    11/26/2015 9:20:51 PM PST · by SunkenCiv · 7 replies
    NASA ^ | November 26, 2015 | (see photo credit)
    Explanation: Planet Earth's horizon stretches across this recent Solar System group portrait, seen from the southern hemisphere's Las Campanas Observatory. Taken before dawn it traces the ecliptic with a line-up familiar to November's early morning risers. Toward the east are bright planets Venus, Mars, and Jupiter as well as Regulus, alpha star of the constellation Leo. Of course the planets are immersed in the faint glow of zodiacal light, visible from the dark site rising at an angle from the horizon. Sometimes known as the false dawn, it's no accident the zodiacal light and planets both lie along the ecliptic....
  • Astronomy Picture of the Day -- Kenya Morning Moon, Planets, and Taurid

    11/12/2015 4:32:17 AM PST · by SunkenCiv · 7 replies
    NASA ^ | November 12, 2015 | (see photo credit)
    Explanation: On November 8, a waning crescent Moon joined the continuing parade of planets in Earth's morning skies. Captured here from Amboseli National Park, Kenya, even the overexposed moonlight can't washout brilliant Venus though, lined up near the ecliptic plane with faint Mars and bright Jupiter above. As if Moon and planets aren't enough, a comparably bright Taurid meteor also streaks through the scene. In fact November's Taurid meteor showers have had a high proportion of bright fireballs. Apparently streaming from radiants in Taurus, the meteors are caused by our fair planet's annual passage through debris from Comet 2P/Encke. The...
  • Are Jupiters Hard to Come By?

    08/12/2008 10:01:25 AM PDT · by SunkenCiv · 6 replies · 110+ views
    Sky and Telescope 'blogs ^ | July 11, 2008 | Camille M. Carlisle
    Using the new Combined Array for Research in Millimeter Astronomy (CARMA), Eisner and his colleagues observed more than 250 stars in Orion's central region and found that less than 8% had dust disks thought massive enough to create a Jupiter. The radiation from hot, massive stars in the cluster probably clears out a lot of surrounding material and keeps high-mass disks from forming, explains co-author John Carpenter (Caltech). In all, about 10% of the observed stars emit radiation associated with warm dust disks. The results agree almost perfectly with findings by Geoff Marcy (UC Berkeley) and his colleagues, who conclude...
  • New data challenge Earth atmosphere theory

    11/03/2007 10:30:34 AM PDT · by SunkenCiv · 2 replies · 51+ views
    Newsdaily ^ | September 19, 2007 | United Press International
    U.S. geochemists challenged commonly held theories about how gases are expelled from the Earth and how a planet's atmosphere is formed. Rensselaer Polytechnic Institute researchers said their new theory could change the way scientists view the timing and mechanism involved in the formation of Earth's atmosphere, as well as the atmospheres of Mars and Venus. The team, led by Professor E. Bruce Watson, said it has found substantial evidence that argon atoms are strongly bound in the minerals of Earth's mantle and move through those minerals at a much slower rate than previously thought. In fact, they said they discovered...
  • Did Jupiter Bumped The Giant Planet From Our Solar System?

    11/02/2015 7:03:39 PM PST · by Beowulf9 · 65 replies
    http://www.starminenews.com ^ | NOV 1, 2015 | PTI
    Toronto– A close encounter with Jupiter about four billion years ago may have resulted in another planet’s ejection from the solar system altogether, scientists have found. The existence of a fifth giant gas planet at the time of the solar system’s formation — in addition to Jupiter, Saturn, Uranus and Neptune that we know of today — was first proposed in 2011, researchers said.
  • 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...
  • We're going on a planet hunt

    04/05/2006 7:53:38 PM PDT · by KevinDavis · 38 replies · 814+ views
    EurekAlert ^ | 04/05/06 | Claire Bowles
    A FIFTH terrestrial planet may once have orbited between Mars and Jupiter. Although gravitational disturbances would have sent the planet hurtling into the sun or out into space long ago, traces of this long-gone world may still be visible in part of the asteroid belt today. Recent simulations have suggested that the gas giants of our solar system formed with circular orbits but moved into their more elongated paths about 4 billion years ago – 700 million years after the solar system formed. While the gas giants were in circular orbits, rocky planets should have formed in stable orbits out...
  • Giant Stealth Planet May Explain Rain of Comets from Solar System's Edge

    12/04/2010 7:32:45 PM PST · by The Magical Mischief Tour · 82 replies
    Space.com ^ | 12/01/2010 | Space.com
    Our sun may have a companion that disturbs comets from the edge of the solar system — a giant planet with up to four times the mass of Jupiter, researchers suggest. A NASA space telescope launched last year may soon detect such a stealth companion to our sun, if it actually exists, in the distant icy realm of the comet-birthing Oort cloud, which surrounds our solar system with billions of icy objects. The potential jumbo Jupiter would likely be a world so frigid it is difficult to spot, researchers said. It could be found up to 30,000 astronomical units from...
  • Suicidal planet seems on death spiral into star

    08/27/2009 8:45:48 AM PDT · by VRWCmember · 20 replies · 848+ views
    Yahoo News ^ | 08/27/2009 | SETH BORENSTEIN
    WASHINGTON – Astronomers have found what appears to be a gigantic suicidal planet. The odd, fiery planet is so close to its star and so large that it is triggering tremendous plasma tides on the star. Those powerful tides are in turn warping the planet's zippy less-than-a-day orbit around its star. The result: an ever-closer tango of death, with the planet eventually spiraling into the star.
  • Hot Jupiters do not rule out alien Earths

    03/31/2006 5:21:28 PM PST · by KevinDavis · 10 replies · 629+ views
    New Scientist Space ^ | 03/31/06 | Maggie McKee
    Habitable, Earth-like planets can form even after giant planets have barrelled through their birthplace on epic migrations towards their host stars, new computer simulations suggest. The finding contradicts early ideas of how planets behave and suggests future space missions should search for terrestrial planets near known "hot Jupiters". Many of the 160 or so known extrasolar planets are hot Jupiters - massive planets that are closer to their stars than Mercury is to our Sun. But the planets probably did not form in these scorching regions because there would not have been enough gas and dust there to amass such...
  • Ocean Planets on the Brink of Detection

    02/03/2007 2:01:40 PM PST · by SunkenCiv · 3 replies · 149+ views
    PhysOrg ^ | February 2, 2007 | Ben Mathiesen
    Early in our own solar system's history, the largest of these planetary embryos acquired a dense envelope of hydrogen and helium and transformed into the gas giants we know today... Planets that form far from their parent star are expected to have a composition similar to comets (50% rock, 50% water by weight). Once a planet exceeds about ten Earth masses it has enough gravity to attract any hydrogen and helium near its orbit, and will rapidly transform into a gas giant... [A planet] in this region that never exceed the threshold... becomes an "ocean planet", a term coined by...
  • Astronomy Picture of the Day -- Jupiter and Venus from Earth

    10/26/2015 8:12:40 AM PDT · by SunkenCiv · 14 replies
    NASA ^ | October 25, 2015 | (see photo credit)
    Explanation: It was visible around the world. The sunset conjunction of Jupiter and Venus in 2012 was visible almost no matter where you lived on Earth. Anyone on the planet with a clear western horizon at sunset could see them. Pictured above in 2012, a creative photographer traveled away from the town lights of Szubin, Poland to image a near closest approach of the two planets. The bright planets were separated only by three degrees and his daughter striking a humorous pose. A faint red sunset still glowed in the background. Jupiter and Venus will be at it again this...
  • 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...
  • 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....
  • "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,...
  • 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...