A mere 4.5 billion years ago, this is what our solar system would have looked like.
The first picture of the Earth rising over the surface of the Moon was taken by a robot two years before humans made it there.
NASA releases a broad timeline that details the technologies and space experience necessary to get humans to the surface of Mars by the 2030s.
The Arecibo Observatory in Puerto Rico has picked up mysterious bursts of radio signals that could originate billions and billions of light-years away from Earth.
Planets that have weird and extreme tilts on their axis could maintain habitability, regardless of their distance from their stars.
Today’s SpaceX launch may have a primary mission of delivering supplies to the ISS, but its secondary goal is to return the rocket safely to Earth to a gentle landing and reuse.
Although it’s been a source of contention, scientists now believe that Gusev Crater on Mars (which was explored by the Spirit rover) once held a lake full of liquid water.
We salute you, whoever had the brilliant idea of strapping cameras onto rockets to get a first-person view of a violent trip to space.
If we’re going to spread the human species to the stars, we’ll need a lot of people on starships to colonize new planets. Seriously, a lot.
Whether or not you voted in NASA's second annual Tournament: Earth, you can still feel good about the image that won, because it's gorgeous.