Journey to the farthest reaches of our solar system and uncover the mysteries of Sedna, a reddish dwarf planet that orbits ...

Astronomers have uncovered a massive hidden planet and a rare “failed star” by combining ultra-precise space data with some of the sharpest ground-based images ever taken. Using the Subaru Telescope ...

Our sun is about halfway through its life, which means Earth is as well. After a star exhausts its hydrogen nuclear fuel, its diameter expands more than a hundredfold, engulfing any unlucky planets in ...

The colliding objects are at least 37 miles across — at least four times larger than the object that collided with Earth 66 ...

Young star systems are a place of violent collisions. Rocks, comets, asteroids and larger objects carom off one another and ...

Learn about the collisions between space rocks that have created huge dust clouds, one of which was previously mistaken for ...

Young star systems are a place of violent collisions. Rocks, comets, asteroids and larger objects bounce off one another and ...

Astronomers have been treated to a stunning fireworks display from around a young star called The events, detected in 2004 ...

A massive collision between two asteroid-sized bodies around a nearby star offers a rare look at the violent process of ...

Outer space never fails to remind us just how much we don't know. Astronomers have uncovered a lemon-shaped planet that ...

I've taken incredible photos of this interstellar comet for more than a month using two tiny iPad-connected scopes in my ...

Our Solar System contains tens of thousands of potentially dangerous asteroids that could wipe out an entire city, or worse. In Washington, a NASA office is leading efforts to spot and neutralize ...