"Yet, NASA will face a myriad of daunting budgetary, industrial, geopolitical, technical, and health and medical constraints ...

An Einstein ring is light from a much more distant galaxy that bends in such a way as to perfectly encircle a closer object.

"They're so rare, and they're incredibly useful scientifically," said Conor O'Riordan of the Max Planck Institute for Astrophysics.

It’s an out-of-this-world experiment for a group of Albuquerque middle schoolers working with NASA to send ingredients up to ...

The system is believed to be traveling at least 1.2 million miles per hour (1.93 million kilometers per hour), according to a ...

Gravitational lensing occurs when the gravity of a massive object, like a galaxy, warps the fabric of spacetime, bending the light from a more distant background object.

Astronomers may have found a star racing through our galaxy at an incredible speed—dragging a planet along with it! If ...

Beyond the immediate impact damage, an asteroid impact would have long-lasting effects on Earth's atmosphere. What would ...