NASA can’t talk to its Mars robots for two weeks because the sun is in the way
The space agency is waiting out a phenomenon known as a solar conjunction, in which Earth and Mars are on opposite sides of the sun
Martian rocks keep hitting Earth, but something doesn’t add up
With roughly 200 bombardments that create 4-meter craters each year, the Martian surface is constantly spewing more rock into space
NASA may have unknowingly found and killed alien life on Mars 50 years ago, scientist claims
After landing on the Red Planet in 1976, NASA's Viking landers may have sampled tiny, dry-resistant life-forms hiding inside Martian rocks
