Super-Earths can exist in wider orbits around their parent stars than was previously believed, suggesting these Earth-like ...

In its quest to chart the evolution of the universe, ESA’s space telescope has already amassed a massive catalog of galaxies and gravitational lenses.

The school-bus-sized observatory launched on April 24, 1990 and overcame early setbacks to become one of the most ...

China revived two failing satellites using a gravity slingshot from Earth, moon, and sun—marking a game-changing leap in ...