Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

Since the Kepler Space Telescope began its prowl for exoplanets in 2009, it has uncovered a strange pattern among these alien ...

On Saturday (Jan. 10), for example, we will see three satellites on one side of Jupiter (going outward from the planet: Ganymede, Io and Europa ), while the fourth ( Callisto) remains all by itself on ...

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ...

Discovered by volunteer scientists, this alien planet is out of synch with its siblings ...

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

New Norcia 3, an antenna installed in Perth by the European Space Agency, will prove fruitful in keeping the spacecraft in ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

American Museum of Natural History Astronomer Dr. Jackie Faherty joins WIRED to answer the internet's burning questions about ...

Shining in the constellation Gemini near the bright stars Pollux and Castor, Jupiter's opposition is the best time to see the ...

The solar system’s largest planet shines bright as the Moon wanes and Saturn’s moons dance in the sky this week.

Audi introduces the all-new A5 as the successor to the long-running A4, marking a significant change in the brand’s naming ...