NASA's Opportunity rover on Mars has now boldly gone farther than any vehicle has before on the surface of another world, space agency officials announced July 28.
Our understanding about the universe and our place in it has changed over time.
When American astronauts make the next "giant leap" by launching to Mars, they will bring with them a memento from the first moon landing 45 years ago.
Running water didn't create the channels that crisscross the surface of the Red Planet, a new study suggests.
After several weather delays, NASA will try to launch a "flying saucer" into Earth's atmosphere Saturday to test technology that could be used to land on Mars.
A private mission could return Martian samples to Earth by 2020 without even touching down on the Red Planet.
The first flight test of NASA's new manned spacecraft may be six months away, but agency engineers are already looking forward to what they will learn from the trial.
SpaceX founder Elon Musk thinks his private spaceflight company will have the capability to land humans on Mars within 12 years.
NASA is thinking hard about what the first boots to set foot on Mars will look like.