A new physics paper takes a step toward creating a long-sought "theory of everything" by uniting gravity with the quantum ...

Two new studies used gravity data to pull back the curtain on the deep interiors of the Moon and one of the solar system’s largest asteroids.

In photos The details in this photograph include the airglow of the atmosphere dividing Earth from space — yellow-green at an ...

The gravitational pull from mass objects dictates the shape of the objects in our galaxy, but what if the most perfect sphere ...

Don Pettit spent a busy 220 days at the International Space Station. He conducted experiments, talked with students and ...

Physicist Melvin Vopson proposes gravity might emerge from cosmic information processing, hinting the universe runs on a ...

This year marks the 50th anniversary of the founding of the European Space Agency (Esa). It has launched spectacularly ...

Though little is known about Deimos, another European spacecraft recently captured unprecedented views of the moon's far side ...

At the very edge of our solar system, beyond the grasp of Neptune and even past the icy sprawl of Pluto’s domain, a new ...

The largest sample of galaxy groups ever detected has been presented by a team of international astronomers using data from ...

Hubble is still going strong 35 years after it was launched into space. Celebrate its anniversary with some out-of-this-world images.