Shop Windows to the Universe

The Winter 2010 issue of The Earth Scientist includes a variety of educational resources, ranging from astronomy to glaciers. Check out the other publications and classroom materials in our online store.
This image shows pebbles found in the lee of a large rock.
Click on image for full size
Image from: JPL/NASA

MPF: Pebbles

This image shows pebbles found near a large rock. Pebbles found at the Mars Pathfinder landingsite were round in shape. This shape suggested to scientists that water once flowed in the region, carrying rocks with it. The pebbly landscape is different from the landscape found at the Viking landing sites. The squarely-shaped rocks of the Viking landing sites can be viewed in the Viking image archive.

The finding of rounded pebbles contributes to the overall results of the Pathfinder mission, and help answer some questions.

Shop Windows to the Universe Science Store!

Learn about Earth and space science, and have fun while doing it! The games section of our online store includes a climate change card game and the Traveling Nitrogen game!

Windows to the Universe Community

News

Opportunities

You might also be interested in:

Traveling Nitrogen Classroom Activity Kit

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

Results from Mars Pathfinder

These are the findings of Mars Pathfinder. Rounded Pebbles were found - a result from analysis of the landing site, the rocks, and the soils. there were a variety of rocks deposited by a catastrophic flood...more

Mars Odyssey

The Mars Odyssey was launched April 7, 2001. After a six-month journey, the Odyssey arrived at Mars on October 24, 2001. The instruments onboard the Mars Odyssey will study the minerals on the surface...more

Mars 2005

The Mars 2005 mission is still in the planning stages. It is set to launch in the year 2005. ...more

Aerobraking

Aerobraking slowed the Mars Global Surveyor down when it reached Mars. Aerobraking also helped MGS to get into the right orbit for mapping the surface of Mars. Aerobraking means that the MGS flew through...more

Mars Global Surveyor Measures Olympus Mons

Mars Global Surveyor carries an instrument which measures the heights of things. This instrument is called an altimeter, or "altitude-meter". The graph to the left shows the results returned from Mars...more

Mars Global Surveyor Measures Martian Global Hemispheres

Mars Global Surveyor carries an instrument which measures the heights of things. The picture to the left shows Mars Global Surveyor's measurement of the size of the giant cliff which separates the southern...more

Mars Global Surveyor Measures Volcano Altitudes

Mars Global Surveyor carries an instrument which measures the heights of things. The picture to the left shows the results returned from Mars Global Surveyor's measurement of the size of some of the Martian...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF