The mission of Mars Exploration Rovers is to find the history of water and evidence of past life on the fourth planet from the sun. The U.S. National Aeronautic and Space Administration calls the rovers "robot geologists... More » Science Astronomy Space Travel

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 » Science Astronomy Planets

Scientists have not yet proven that Mars can currently support life as we know it on Earth. Based on data from the NASA Exploration Rover, Mars may have been able to support life approximately 4 billion years ago. More » Science Astronomy Planets

NASA's Mars exploration program has turned up some evidence that the red planet may once have been at least partially habitable, though not necessarily for the kind of life forms an Earthling would expect to see on a hab... More »

Sending humans to Mars is an explicit goal of NASA's Mars exploration program, but it comes second to other goals like finding potential life and understanding the planet's geology. Some sources say that NASA aims to sen... More » Science Astronomy Space Travel

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 » Science Astronomy Space Travel

As of 2015 there is no conclusive evidence that life on Mars exists or has ever existed, but scientists are hesitant to give a definitive answer without conclusive data. Most experts agree that it is theoretically possib... More » Science Astronomy Space Travel