The New Horizons spacecraft zooms toward an object 4 billion miles from Earth.
There's a reason why so few rockets are designed to come back to their launch sites.
This discovery could have a big effect on how scientists think about planet formation.
Before email, there was rocket mail. Kind of.
A new set of images beamed back from the New Horizons spacecraft reveals the unusual “pancake”-like shape of this Kuiper Belt Object.
What's the meaning behind moon names?
With new technologies, NASA and private companies are promising a new renaissance in space travel.
The life of our solar system told in five dramatic stories spanning billions of years.