Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2001 September 25
See Explanation. Clicking on the picture will download the largest version available.

The Highs and Lows of Earth
Credit: GLOBE, NGDC, NOAA

Explanation: What's up on planet Earth? A truly global answer has now been created by the Global Land One-km Base Elevation (GLOBE) Project. Pictured above is the best digital elevation map yet created for our home planet, a map it took over ten years to make that incorporates data provided by many different countries around the world. The relief map is colour coded with sea level shown in black, relatively low areas shown in green, higher areas shown in brown, and the highest areas shown in white. Can you find your hometown? Clicking on the map will bring up a higher resolution version. Even more detailed versions are also available.

Tomorrow's picture: Comet Borrelly's Nucleus

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Technical Rep.: Jay Norris. Specific rights apply.
A service of: LHEA at NASA/ GSFC
& Michigan Tech. U.