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Author Topic: Possible 'Comet of the Century' Blazes Up in New Photos  (Read 4541 times)

Offline Deano

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Possible 'Comet of the Century' Blazes Up in New Photos
« on: June 06, 2013, 05:01:06 PM »
A comet that could become one of the brightest ever seen when it flies by the sun this November is already remarkably bright and active, a new set of photos shows.

Comet ISON sports a well-defined tail of dust and gas even though it remains far from the sun, the new images from Hawaii's Gemini North Observatory reveal. But it's still too early to tell if ISON will live up to the "comet of the century" hype, researchers stress.

The new Gemini North images captured ISON from early February to early May of this year, when the comet ranged between 455 million to 360 million miles from the sun (730 million to 580 million km) — just inside the orbit of Jupiter.

Most comets develop a tail when they're near the main asteroid belt between Mars and Jupiter, because at this distance the sun's warmth begins sublimating their water ice to gas, researchers said. But ISON already had a tail when it was roughly twice this distance from our star, indicating that some other material was sublimating out.
Full story & video at Space.com


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Online Mark

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Hubble Space Telescope snaps first pictures of super-fast Comet ISON
« Reply #1 on: July 05, 2013, 08:17:22 AM »
July 4, 2013 – SPACE - The Comet ISON shines like a cosmic skyrocket in a new video from the Hubble Space Telescope as the icy wanderer, which some astronomers have billed as a potential “comet of the century,” streaks through our solar system at a staggering 48,000 mph. The new Comet ISON video, which NASA released Tuesday (July 2), is a time-lapse view created from images of the comet obtained using the Hubble telescope on May 8. At the time, the comet was about 403 million miles (648 million kilometers) from Earth and crossing between the orbits of Jupiter and Mars. NASA officials likened the comet’s extreme speed to a skyrocket on the Fourth of July. “The movie shows a sequence of Hubble observations taken over a 43-minute span and compresses this into just five seconds,” NASA officials explained in a video description. “The comet travels 34,000 miles in this brief video, or 7 percent of the distance between Earth and the moon. The deep-space visitor streaks silently against the background stars.” The blue hue of ISON in the new video is actually a false-color view of the comet as it appeared through the Wide Field Camera 3 on the Hubble Space Telescope. Comet ISON was discovered by amateur astronomers in September 2012 and is headed for a close encounter with the sun in late November of this year.
http://news.yahoo.com/hubble-telescope-snaps-comet-century-fireworks-video-201615533.html

Online Mark

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"Comet of the Century" could turn into a century-class disappointment
« Reply #2 on: October 04, 2013, 08:04:38 AM »
IS COMET ISON POISED TO DISINTEGRATE?  As Comet ISON passes Mars en route to the sun this week, the comet is still faint. Nevertheless, many experts believe the comet is on track to become a bright sungrazer in late November. Astronomer Ignacio Ferrin of the University of Antioquia Institute of Physics in Colombia disagrees. Ferrin believes Comet ISON is about to disintegrate. The light curve of ISON, he argues, resembles the light curves of other comets that have have fallen apart. If he's right, the "Comet of the Century" could turn into a century-class disappointment. Stay tuned to the Comet ISON Photo Gallery for updates.
http://spaceweather.com/


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