A robotic mission's search for life on Mars may seem worlds away from human scientists wandering around hot springs in Yellowstone National Park.
An awe-inspiring landscape of multicolored dust and jewel-like stars has been unveiled as the official image of the 25th anniversary of the Hubble Space Telescope.
Liquid water lurks just below the surface of Mars on cold winter nights, according to new research.
Humanity is on the verge of discovering alien life, high-ranking NASA scientists say.
NASA's Curiosity rover has photographed some Martian rocks that bear a passing resemblance to a tasty frozen treat.
NASA has given the world another glimpse of its revolutionary flying saucer technology, which will play a crucial role in future Mars missions.
NASA's Scott Kelly — one of two people spending a year on the International Space Station — already feels like the orbiting outpost is home.
Astronaut Scott Kelly has blasted off on his yearlong mission to the International Space Station.