The solar system was packed with 50 to 100 protoplanets billions of years ago. Not all of them lived to tell the tale of the ...

With METIS and MICADO, two instruments for what will be the largest optical telescope in the world, the Extremely Large ...

Researchers suggest that certain gases detected in the atmospheres of exoplanets could be key indicators in the search for ...

NEW YORK — Venus will pass between the Earth and sun on Saturday during what's called an inferior conjunction. But don't plan ...

Researchers can see celestial snapshots with the James Webb Space Telescope, the most powerful ever launched, of the star ...

Finding alien life won’t be as dramatic as a flying saucer landing on the White House lawn – it’ll be NASA scientists holding ...

For the first time, NASA’s James Webb Space Telescope (JWST) has captured direct images of carbon dioxide in the atmosphere ...

Hycean worlds, which are a possible kind of exoplanet with deep oceans surrounded by a thick envelope of hydrogen, could ...

The gas giants outside our solar system are not capable of hosting extraterrestrial life, but do offer clues in a lingering ...

Dramatic theories have been proposed to explain the mysterious interiors of Uranus and Neptune, the ice giants of our solar ...

Once its rings vanish from sight in March 2025, Saturn will look like a pale yellow sphere through most telescopes.

Astronomers should search for technosignatures on planets that are not conducive to life. Harvard astronomer Avi Loeb ...