Martian Surface

The fourth planet from the Sun in the solar system. Mars orbits the Sun at an average distance of 1.52 AU. The planet has a mass 0.1 times the mass of Earth and a radius 0.5 times the radius of Earth. It is made of solid, rocky material, and has a thin atmosphere of carbon dioxide. Iron oxide, or rust, on the surface of Mars gives it its characteristic red color. The planet has bright polar ice caps made of frozen water and carbon dioxide. Mars also has two small moons, Phobos and Deimos.


Mars Mars inspires speculation like no other world in...

Featured Images

Sand dunes on Mars
Dune World Sunday, December 20, 2015
First Eyes on Mars Monday, July 13, 2015
Curiosity rover view of rock layers inside Gale Crater on Mars
Ancient Lakebed Tuesday, December 9, 2014
September 9, 2014, view of Curiosity rover's surroundings on Mars
Going Strong Tuesday, September 9, 2014
Artist's concept of early morning fog, clouds, and frost on Mars
Morning Fog Tuesday, April 8, 2014
Downhill Racer Saturday, February 22, 2014
Fresh Martian impact crater seen by an orbiting spacecraft in late 2013
Fresh Impact Friday, February 7, 2014
Rio Tinto, a river in Spain, is a Mars analog
Red River Wednesday, October 9, 2013
Kasei Valles, an ancient flood channel on Mars
Ancient Flood Monday, June 10, 2013
Curiosity rover view of Mount Sharp, March 2013
Sharp Destination Tuesday, March 19, 2013
Curiosity view of Rocknest on Mars
Rocky Home Thursday, November 29, 2012
Early view of the rim of Gale Crater
Inside the Wall Sunday, August 12, 2012
August 8, 2012, view of Mars from the Curiosity rover
Getting Acquainted Wednesday, August 8, 2012
Endeavour Crater, winter home of the Opportunity Mars rover
Winter Wonderland Thursday, January 26, 2012
Craters fill an ancient river channel on Mars
Martian Rapids Monday, October 10, 2011
Panoramic view of Endeavour crater on Mars, imaged by the Opportunity rover
Final Destination Thursday, August 11, 2011
Rock varnish on a rock from the Atacama Desert
Bacteria Colony? Friday, July 29, 2011
Scientists are studying rocks in Chile to learn about possible life on Mars
Looking for Life Wednesday, July 27, 2011
Chile's Atacama Desert is an analog for studying conditions on Mars
Mars on Earth Tuesday, July 26, 2011
The Opportunity rover crosses the Martian plains toward Endeavour crater
Crater Crawling Saturday, April 16, 2011
Image of water distribution in northern hemisphere of Mars
Watery Mars Thursday, April 14, 2011
Ground and orbital views of Opportunity rover at Santa Maria crater
Looking In Tuesday, February 8, 2011
Over the Rim Friday, December 31, 2010
The Opportunity rover casts it shadow on the rim of a Martian crater
Martian Robot Wednesday, December 29, 2010
The next Mars rover, Curiosity, zaps a Martian rock with a small laser in this a
War of the Worlds? Wednesday, May 19, 2010
Martian 'Canali' Sunday, March 14, 2010

Radio Programs

Moon and More Companions Filling up a Martian crater Thursday, October 8, 2015
Moon, Venus, and Mars Ancient Mars cools off Wednesday, September 9, 2015
Ocean Lost A massive ocean on the planet Mars Thursday, June 4, 2015
Moon and Mars Warming up a cold planet Saturday, March 21, 2015
Moon and Mars Asteroids take aim at Mars Thursday, January 22, 2015
Moon and Mars Coloring the Martian sky Saturday, August 2, 2014
Moon and Mars Digging holes on other worlds Saturday, May 10, 2014
Moon and Companions Seeing orange on a nearby planet Monday, March 17, 2014
Moon and Mars A garden spot on the Red Planet Wednesday, February 19, 2014
Moon and Mars Taking a trip to Mars Tuesday, January 21, 2014
Moon and Mars A comfortable planetary neighbor Monday, October 28, 2013
Moon and Mars Gentle giants on the planet Mars Sunday, September 29, 2013
Moon and Mars Drilling holes in the surface of Mars Sunday, September 1, 2013
Moon and Mars Prime real estate on other worlds Wednesday, September 19, 2012
Sky Crane A complicated landing for a complicated rover Sunday, August 5, 2012
Martian Nuke Powering up a Mars rover Saturday, August 4, 2012
Moon and Mars Listening in to the Red Planet Monday, June 25, 2012
Secret Mars Unlocking the secrets of the Red Planet Friday, March 2, 2012
Warming Mars Warming up a desert planet Sunday, February 19, 2012
More Moon and Mars Scaling the heights of Mars Friday, January 13, 2012
Moon and Mars Molding the image of the Red Planet Friday, December 16, 2011
Mars Science Laboratory I Plumbing for water on Mars Tuesday, November 22, 2011
More Moon and Companions Settling in on a new world Friday, November 18, 2011
Moon and Mars Strolling on alien worlds Thursday, October 20, 2011
Watery Mars Divining for water on Mars Thursday, April 14, 2011


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