National Aeronautics and Space Administration Logo
Follow this link to skip to the main content NASA Banner
Solar System Exploration
News & Events
Space Weather News: Dust and Distance
Space Weather News: Dust and Distance
3 Jul 2003
(Source: Spaceweather.com)

Space Weather News for July 3, 2003 http://spaceweather.com

EARTH AT APHELION: Earth's orbit is not a perfect circle, it's an ellipse. This means our planet is not always the same distance from the sun. The greatest distance, which astronomers call aphelion, occurs this year on the Fourth of July. Curiously, the globally-averaged temperature of Earth is greatest when we are farthest from the sun. Follow the links on spaceweather.com and find out why.

MARS DUST: The distance between Earth and Mars is shrinking fast. Although the two worlds won't be closest together until late August, amateur astronomers are already getting remarkable views of Mars through backyard telescopes. For instance, some advanced observers have just spotted a dust cloud forming near Hellas Basin--a giant impact crater on Mars' southern hemisphere. Two years ago a similar cloud grew into a global dust storm on Mars. Will this one do the same? Probably not, although astronomers will be watching carefully to see what happens.

News Archive Search  Go!
Show  results per page
 
 
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: 3 Jul 2003