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Keyword: cometison

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  • Astronomy Picture of the Day -- Comet ISON Being Destroyed by the Sun

    11/01/2015 10:24:46 PM PST · by SunkenCiv · 6 replies
    NASA ^ | November 02, 2015 | (see photo credit)
    Explanation: Most comets don't survive a close encounter with the Sun. Two years ago this month, though, Comet ISON was thought by some to be big enough to withstand its perilous sungrazing dive. The featured video shows the drama as it was recorded by NASA's Solar and Heliospheric Observatory (SOHO) satellite. As many Earthlings watched in fascination, a bright area did emerge from closest approach, but it soon faded and dispersed. It is now assumed that no large fragments of Comet C/2012 S1 (ISON) survived. Besides the comet, the active Sun is seen to eject puffs of plasma known as...
  • Kamikaze Comet Loses its Head

    03/02/2015 3:48:53 PM PST · by BenLurkin · 13 replies
    On Wednesday evening Feb. 25, Justin Cowart, a geologist and amateur astronomer from Alto Pass, Illinois figured he’d have a crack at it. Cowart didn’t have much hope after hearing the news that the comet may very well have crumbled apart after the manner of that most famous of disintegrators, Comet ISON . ISON fragmented even before perihelion in late 2013, leaving behind an expanding cloud of exceedingly faint dust. Cowart set up a camera and tracking mount anyway and waited for clearing in the west after sunset. Comet D1 SOHO was located some 10° above the horizon near the...
  • Hubble Looks but Finds No Trace of Comet ISON

    12/20/2013 10:16:14 PM PST · by BenLurkin · 69 replies
    universetoday.com ^ | December 20, 2013 | Bob King on
    On December 18, the Hubble Space Telescope slewed to Comet ISON’s expected position and found nothing down to the incredibly faint magnitude of 25. According to astronomer Hal Weaver, who planned the ISON search, that limit implies any remaining fragments would have to be smaller than about 500 feet (160 meters) in diameter.
  • Astronomy Picture of the Day -- Surprising Comet ISON

    12/01/2013 7:37:42 AM PST · by SunkenCiv · 34 replies
    NASA ^ | November 30, 2013 | (see photo credit)
    Explanation: After failing to appear for Sun staring spacecraft at perihelion, its harrowing closest approach to the Sun, sungrazing Comet ISON was presumed lost. But ISON surprised observers yesterday as material still traveling along the comet's trajectory became visible and even developed an extensive fan-shaped dust tail. Edited and processed to HD format, this video (vimeo, youtube) is composed of frames from the SOHO spacecraft's coronographs. It follows the comet in view of the wide (blue tint) and narrow (red tint) field cameras in the hours both before and after perihelion passage. In both fields, overwhelming sunlight is blocked by...
  • Did Comet ISON survive? Scientists see tiny hope

    11/29/2013 8:20:34 AM PST · by Brad from Tennessee · 50 replies
    AP via Washington Post ^ | November 29, 2013 | Associated Press
    STOCKHOLM — A comet that gained an earthly following because of its bright tail visible from space was initially declared dead after essentially grazing the sun. Now, there is a silver of hope that Comet ISON may have survived. New images, basically faint smudges on a screen, being analyzed Friday showed a streak of light moving away from the sun that some said could indicate it wasn’t game over just yet. “It certainly appears as if there is an object there that is emitting material,” said Alan Fitzsimmons, an astronomer at Queens University in Belfast, Northern Ireland. Basically a dirty...
  • COMET ISON LIVES (UPDATED)[Video at link]

    11/29/2013 4:35:15 PM PST · by Islander7 · 14 replies
    SpaceWeather.com ^ | Nov 29, 2013 | Staff
    COMET ISON LIVES (UPDATED): Cancel the funeral. Comet ISON is back from the dead. Yesterday, Nov. 28th, Comet ISON flew through the sun's atmosphere and appeared to disintegrate before the cameras of several NASA and ESA spacecraft. This prompted reports of the comet's demise. Today, the comet has revived and is rapidly brightening. Click to view a SOHO coronagraph movie of the solar flyby
  • Astronomy Picture of the Day -- Comet ISON Before and After

    11/29/2013 8:59:37 AM PST · by SunkenCiv · 13 replies
    NASA ^ | November 29, 2013 | (see photo credit)
    Explanation: Sungrazing Comet ISON reached perihelion, its closest approach to the Sun, yesterday, November 28, at 18:45 UT. The comet passed just over 1 million kilometers above the solar surface, a distance less than the diameter of the Sun. These two panels follow ISON before (right) and after its close approach, imaged by the LASCO instrument onboard the Sun staring SOHO spacecraft. Overwhelming sunlight is blocked by LASCO's central occulting disk with a white circle indicating the Sun's positon and scale. The bright comet is seen along its path at the bottom of the before panel, but something much fainter...
  • Comet ISON sweeps near sun, shows signs of life

    11/29/2013 12:30:08 AM PST · by BenLurkin · 18 replies
    CNN ^ | 1:36 AM EST, Fri November 29, 2013 | Amanda Barnett,
    Hold the obituary. Experts now think Comet ISON -- or at least part of it -- survived its close encounter with the sun. Karl Battams, a comet scientist for the Naval Research Laboratory, said it is believed some parts of ISON's nucleus survived perihelion. "It now looks like some chunk of ISON's nucleus has indeed made it through the solar corona, and re-emerged," he said. "It's throwing off dust and (probably) gas, but we don't know how long it can sustain that." However, he said, it's fate is uncertain.
  • WATCH LIVE TODAY @ 1 pm ET: Comet ISON Buzzes the Sun, SpaceX Rocket Launch

    11/28/2013 8:24:35 AM PST · by Errant · 246 replies
    Space.com ^ | 28 November, 2013 | Staff
    NASA will hold a live Google+ hangout on Thursday (Nov. 28) to webcast the solar passage of Comet ISON as it whips around the sun. The webcast will begin at 1 p.m. EST (1800 GMT) and last until 3:30 p.m. EST (2030 GMT). You will be able to watch the webcast live in the window below at the start time. LATEST STORY: Comet ISON Makes Thanksgiving Day Sun Flyby Today: Watch It Live Online
  • Comet Ison destroyed in Sun passage

    11/28/2013 3:19:30 PM PST · by LeoWindhorse · 93 replies
    BBC World News ^ | Nov. 28 ,2013 | BBC
    Comet Ison was severely battered in its encounter with the Sun, and largely destroyed. Telescopes saw the giant ball of ice and dust disappear behind the star, but only a dull streamer emerge. Astronomers continued to search for the object, but it eventually became clear that the much vaunted "Comet of the Century" had gone out with a whimper. Despite its great size, Ison was probably torn apart in the immense heat and tidal forces so close to the Sun.
  • Comet ISON Becomes a Nail-Biter (An Omen?)

    11/27/2013 9:19:51 AM PST · by Repent and Believe · 22 replies
    Sky & Telescope ^ | November 25, 2013 A.D. | Alan MacRobert
    (snip) Comet ISON (C/2012 S1) is nearing the climax...(snip) What will emerge after perihelion into the December dawn? A naked-eye marvel, a binocular-only target for amateur astronomers with good charts, or nothing at all? Maybe the latter, a new report this morning suggests. Michal Drahus posts: (snip)We observe consistent, rapid fading of the molecular emission lines between Nov. 21 and Nov. 25 by at least a factor of 20 (likely more). This may indicate that the nucleus is now at best marginally active or that... it no longer exists. (snip) I am afraid that there is rather "little hope" for...
  • Will Comet ISON beat the odds? Watch a superstar's climactic scene

    11/27/2013 6:36:53 AM PST · by Red Badger · 18 replies
    NBC News ^ | 11-27-2013, 16 hours ago | Alan Boyle, Science Editor
    Experts gives Comet ISON only a 30 percent chance of surviving its crucial Thanksgiving Day encounter with the sun. Or maybe 40 percent. Whatever the odds, scientists say what some have called the "comet of the century" has already lived up to their expectations. But will it live up to yours? We should find out on Thursday, during a series of webcasts you can tune into while waiting for Thanksgiving dinner. You won't be able to see the comet flaring in the sky on Thursday. Instead, leave the comet-watching job to NASA's sun-watching probes, including the Solar Dynamics Observatory, the...
  • Astronomy Picture of the Day -- Comet ISON Rising

    11/27/2013 4:05:54 AM PST · by SunkenCiv · 15 replies
    NASA ^ | November 27, 2013 | (see photo credit)
    Explanation: Will Comet ISON survive tomorrow's close encounter with the Sun? Approaching to within a solar diameter of the Sun's surface, the fate of one of the most unusual comets of modern times will finally be determined. The comet could shed a great amount of ice and dust into a developing tail -- or break apart completely. Unfortunately, the closer Comet ISON gets to the Sun, the harder it has been for conventional telescopes to see the brightening comet in the glare of the morning Sun. Pictured in the above short time lapse video, Comet ISON was captured rising over...
  • Cosmic daredevil comet ISON will pass sun this week [Thanksgiving Day!]

    11/25/2013 12:38:44 PM PST · by Red Badger · 24 replies
    Christian Science Monitor ^ | November 25, 2013 | By Mike Wall
    Professional astronomers are eagerly awaiting the comet's much-anticipated brush with the sun, expected for Thanksgiving Day. The promising Comet ISON's close pass by the sun this week has amateur astronomers on the edge of their seats, but professional scientists are anticipating the celestial encounter with perhaps even greater relish. Comet ISON is set to skim just 730,000 miles (1.2 million kilometers) above the surface of the sun on Thanksgiving Day (Nov. 28). The comet has brightened considerably as it has zoomed closer and closer to the sun in recent weeks, thrilling stargazers who have captured amazing photos of ISON and...
  • Astronomy Picture of the Day -- Comet ISON from STEREO

    11/23/2013 9:37:38 AM PST · by SunkenCiv · 20 replies
    NASA ^ | November 23, 2013 | (see photo credit)
    Explanation: Still intact, on November 21 Comet ISON (C/2012 S1) swept into this animated field of view (left) from the HI-1 camera on the STEREO-A spacecraft. The camera has also captured periodic Comet Encke, Mercury, and Earth, with the Sun cropped out of the frame at the right, the source of the billowing solar wind. From STEREO's perspective in interplanetary space, planet Earth is actually the most distant of the group, seen in its orbit beyond the Sun. Mercury is closest, but both planets are still so bright they create sharp vertical lines in the camera's detector. Both comets clearly...
  • Astronomy Picture of the Day -- Active Comet ISON

    11/16/2013 2:32:59 PM PST · by SunkenCiv · 13 replies
    NASA ^ | November 16, 2013 | (see photo credit)
    Explanation: Falling through planet Earth's predawn skies toward its close encounter with the Sun on November 28, Comet ISON is coming to life. The much anticipated comet has now been reported to have substantially increased in activity, surging to naked-eye visibility for dark sites and sprouting a more complex tail. ISON's tail stretches over two degrees in this telephoto skyview from southern Kenya, captured on the morning of November 14. Shown in two panels, the enlarged negative version on the right makes details of the long tail easier to trace, including the tail's separated filaments toward the top of the...
  • God Talks To Our DNA

    11/14/2013 1:00:43 AM PST · by Yosemitest · 23 replies
    www.YouTube.com ^ | Nov 13, 2013 | Yosemitest
    ISON is in an Outburst Now. The Hidden Code This is the quote from the 12 minute 35 second video that BPEarthWatch posted on YouTube.com:"God talks to our DNA." This quote comes from the 3 minute 14 second to the 3 minute 18 seconds part of that video.BPEarthWatch has a lot of information in this video and information that, I believe, should be discussed. He took 200 or 300 pages of information and tried to boil it down to this video and he's talking about ELF (Extremely Low Frequency) Waves and the Earth's Resonance Frequency of 7.8 Hz or...
  • Astronomy Picture of the Day -- Comet Lovejoy with M44

    11/09/2013 11:29:50 PM PST · by SunkenCiv · 1 replies
    NASA ^ | November 09, 2013 | (see photo credit)
    Explanation: While anxiously waiting for Comet ISON to brighten further as it falls toward the Sun, northern skygazers can also find three other bright comets in the east before dawn. In fact, Comet Lovejoy C/2013 R1 is currently the morning sky's brightest. Only discovered in September and not a sungrazing comet, this Comet Lovejoy is nearing the edge of naked-eye visibility and might be spotted from very dark sky sites. Sporting a greenish coma and tail in this telescopic view taken on November 7, Comet Lovejoy is about 0.5 AU from our fair planet and 1.2 AU from the Sun....
  • Astronomy Picture of the Day -- Sungrazer

    10/27/2013 9:05:20 AM PDT · by SunkenCiv · 8 replies
    NASA ^ | October 27, 2013 | (see photo credit)
    Explanation: Arcing toward a fiery fate, this Sungrazer comet was recorded by the SOHO spacecraft's Large Angle Spectrometric COronagraph(LASCO) on December 23, 1996. LASCO uses an occulting disk, partially visible at the lower right, to block out the otherwise overwhelming solar disk allowing it to image the inner 8 million kilometers of the relatively faint corona. The comet is seen as its coma enters the bright equatorial solar wind region (oriented vertically). Positioned in space to continuously observe the Sun, SOHO has now been used to discover over 1,500 comets, including numerous sungrazers. Based on their orbits, the vast majority...
  • Giant NASA Balloon Mission to See Comet ISON Suffers Telescope Glitch

    10/01/2013 8:55:16 PM PDT · by oxcart · 14 replies
    Space.com ^ | 09/30/13 | Leonard David
    An ambitious one-day mission to observe the potentially dazzling Comet ISON with a telescope dangling from a colossal NASA balloon this weekend has failed due to a mechanical glitch, NASA officials say. The mission, called the Balloon Rapid Response for ISON (BRRISON), lifted off from Fort Sumner, N.M., on Saturday (Sept. 28) in a bid to make telescope observations of Comet ISON — which some scientists have dubbed as a potential "comet of the century" if brightens on its way into the inner solar system. The telescope-toting balloon aimed to observe the comet from the Earth's upper atmosphere in infrared...