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The most recent Mars rover, called Curiosity, landed on Aug. 6, 2012, on the Aeolis Palus plain near the Gale Crater. Three previous rovers successfully landed on Mars, including the Sojourner on July 4, 1997; Spirit on ... More »

www.reference.com Science Astronomy Planets

Mars rovers have uncovered a variety of different things on the red planet, including geographical features such as dried up lake beds, patches of salt crystals believed to be former sites of salt water bodies and multip... More »

www.reference.com Science Astronomy Space Travel

Curiosity, a rover that's exploring Mars as of 2014, has a top ground speed of 1.5 inches per second, or about 0.1 mph. Curiosity landed on Mars on Aug. 5, 2012. More »

www.reference.com Science Astronomy Space Travel
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Curiosity, a rover that's exploring Mars as of 2014, has a top ground speed of 1.5 inches per second, or about 0.1 mph. Curiosity landed on Mars on Aug. 5, 2012. More »

www.reference.com Science Astronomy Space Travel

Because Mars with its famous red coloration is readily visible from Earth, it is unknown who first discovered it; NASA lists the planet as "known by the ancients." There are records of its existence as far back as ancien... More »

www.reference.com Science Astronomy Planets

Mars is the fourth planet from the sun. Its average distance from the sun is 141,633,120 miles, approximately 1.5 times that of Earth. More »

www.reference.com Science Astronomy Planets

Mars earned its famous moniker, "red planet," due to its red appearance that is highly visible from Earth. The distinct rusty-red color of Mars is attributed to the abundance of iron-rich soil that covers the planet's su... More »

www.reference.com Science Astronomy Planets