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NASA'S STEREO Shows Comet ISON Approaching the Sun
NASA'S STEREO Shows Comet ISON Approaching the Sun

The latest movie from the STEREO-A spacecraft's Heliospheric Imager shows the comet over a five-day period from Nov. 20 to Nov. 25, 2013.
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NASA Hosts Nov. 26 Teleconference and Nov. 28 Hangout to Discuss Comet Nearing Sun
NASA Hosts Nov. 26 Teleconference and Nov. 28 Hangout to Discuss Comet Nearing Sun

NASA will host a media teleconference Tuesday, Nov. 26 and a Google+ Hangout Thursday, Nov. 28 to discuss comet ISON's journey through our solar system.
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MESSENGER
A Tale of Two Comets: MESSENGER Captures Images of Encke and ISON

On November 18 and 19, NASA's Mercury-orbiting MESSENGER spacecraft viewed comets Encke and ISON.
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Three Questions About Comet ISON
Three Questions About Comet ISON

Comet ISON will reach its closest approach to the sun on Thanksgiving Day (11/28/13), skimming just 730,000 miles above its surface.
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SOHO
NASA's Solar Observing Fleet to Watch Comet ISON's Journey around the Sun

It began in the Oort cloud, almost a light year away. It has traveled for over a million years. It has almost reached the star that has pulled it steadily forward for so long. On Thanksgiving Day, Nov. 28, 2013, Comet ISON will finally ...
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NASA Releases Comet ISON Images from STEREO
NASA Releases Comet ISON Images from STEREO

Comet ISON entered the field of view of the HI-1 camera on NASA's Solar Terrestrial Relations Observatory, or STEREO, on Nov. 21, 2013, and the comet shows up clearly, appearing to still be intact.
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SOFIA's Target of Opportunity: Comet ISON
SOFIA's Target of Opportunity: Comet ISON

NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) embarked on a "target of opportunity" flight recently that included study of Comet ISON.
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How to Cook a Comet
How to Cook a Comet

A comet's journey through the solar system is perilous and violent.
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A Six-Minute Journey to Study Comet ISON
A Six-Minute Journey to Study Comet ISON

In an example of an extremely tight turnaround, a NASA-funded team has spent six months preparing for a mid-November launch to observe Comet ISON during a six-minute sounding rocket flight.
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Asteroids
Update on Near-Earth Objects

While initial reports from the Minor Planet Center in Cambridge, Mass., categorized object 2013 US10 as a very large near-Earth asteroid, new observations now indicate that it is, in fact, a long-period comet, and it is now designated C/2013 US10.
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Upcoming Events
13 Jun 2015 5th Anniversary, Hayabusa: Sample Return to Earth
22 Jun 2015 5th Anniversary, Deep Impact (EPOXI): Earth Flyby 3
04 Jul 2015 10th Anniversary, Deep Impact (EPOXI): Comet Tempel 1 Impact
10 Jul 2015 5th Anniversary, Rosetta: Asteroid Lutetia Flyby
06 Aug 2015 1st Anniversary, Rosetta: Rosetta's Rendezvous with Comet 67P/Churyumov-Gerasimenko
11 Sep 2015 30th Anniversary, ISEE-3/ICE: Traversed Plasma Tail of Comet Giacobini-Zinner
04 Nov 2015 5th Anniversary, Deep Impact (EPOXI): Comet Hartley 2 Encounter
12 Nov 2015 1st Anniversary, Rosetta: Philae Lands on Comet 67P/Churyumov-Gerasimenko
15 Jan 2016 10th Anniversary, Stardust: Earth Sample Return
30 Jan 2016 10th Anniversary, Stardust: Stardust Spacecraft in Hibernation Mode

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