A “WATER MARK” covers part of Meridiani Planum as a layer rich in a mineral called hematite. Spotted by the Thermal Emission Spectrometer on the Mars Global Surveyor orbiter, the hematite — which ...

Geologic features at the Opportunity landing site on Mars were formed not by a lake that evaporated but by constant strikes from meteorites, say two Arizona State University geologists. The site where ...

A new observation from NASA's Mars Reconnaissance Orbiter (MRO) captures the landing platform that the rover Opportunity left behind in Eagle Crater more than 13 years and 27 miles (or 44 kilometers) ...

Opportunity and Spirit survive "six minutes of terror." “Landing on Mars” is the story of Opportunity and Spirit surviving a massive solar flare during cruise ...

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...