NASA has made the most precise measurement yet of the Hubble constant, the rate at which our univers...

The starry-skied planets are two so-called hot Jupiters, which are massive, gaseous orbs that are bo...

Astronomers have discovered a planet two-thirds the size of earth and possibly the closest to our so...

The mysterious and sudden disappearance of a dusty disk of rocky debris around a nearby sun-like sta...

Astronomers using NASA's Hubble Space Telescope have found a puzzling arc of light behind an extreme...

A giant gas planet, spanning in the sky three times the size of our Moon and rising over the molten ...

Astronomers are gearing for one the rarest events in the Solar System: an alignment of Earth, Venus ...

Astronomers have discovered what they claim is a "hidden planet" outside our solar system, using a 1...

Using a powerful telescope based in Hawaii, a team of Japanese astronomers has peered back through t...