NASA’s Johnson Space Center reminded everyone on Monday that its four volunteers have been inside its Mars simulation habitat ...

Scientists suspect iron meteorites might be able to resist erosion on Mars, which may explain why some appear perched on flat ground rather than embedded in craters. In other cases, a crater may have ...

NASA selects 10 new astronauts from among 8,000 applicants and begins training that will take them into orbit, to the Moon, ...