National Aeronautics and Space Administration Logo
Follow this link to skip to the main content NASA Banner
Solar System Exploration
Planets
Comets: Events
   Overview   Read More   Science Targets   Gallery 
   Education   Events   Missions   News   FAQ 
Color image of comet against a background of stars and galaxies.
Comet ISON in April 2013

Comet ISON: Sizzle or Fizzle?

Here's what we know about this much-discussed Oort Cloud comet:

  • It is set to be the most observed comet by NASA ever - 16 space-based assets, including astronauts aboard the International Space Station.
  • ISON is a pristine comet from the Oort Cloud - this is its first time visiting our solar system.
  • The comet is a sungrazer (like Comet Lovejoy). It will fly through the atmosphere of the sun, and may not survive closest approach on 28 Nov 2013.
  • Another comet from the Oort Cloud will be visiting next year, so scientists will be comparing both to see how comets from this icy reservoir of debris beyond our solar system differ from other comets.

For resources and details, visit: Comet ISON Toolkit


Upcoming Events

12 Nov 2014:  Rosetta: Philae Lands on Comet 67P/Churyumov-Gerasimenko (16:00 UTC (8 a.m. PST and 11 a.m. EST))
Aug 2015:  Rosetta: Spacecraft & Comet Closest Approach to Sun
Awards and Recognition   Solar System Exploration Roadmap   Contact Us   Site Map   Print This Page
NASA Official: Kristen Erickson
Advisory: Dr. James Green, Director of Planetary Science
Outreach Manager: Alice Wessen
Curator/Editor: Phil Davis
Science Writer: Autumn Burdick
Producer: Greg Baerg
Webmaster: David Martin
> NASA Science Mission Directorate
> Budgets, Strategic Plans and Accountability Reports
> Equal Employment Opportunity Data
   Posted Pursuant to the No Fear Act
> Information-Dissemination Policies and Inventories
> Freedom of Information Act
> Privacy Policy & Important Notices
> Inspector General Hotline
> Office of the Inspector General
> NASA Communications Policy
> USA.gov
> ExpectMore.gov
> NASA Advisory Council
> Open Government at NASA
Last Updated: 20 Oct 2014