K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know ...

While cautious about the findings, astronomers detected traces of a chemical that, on Earth, is produced by phytoplankton.

"Given everything we know about this planet, a Hycean world with an ocean that is teeming with life is the scenario that best ...

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding?

The astronomers detected 44 stars in the "Dragon Arc" galaxy, located 6.5 billion light years away from our own Milky Way, using NASA's ultra-powerful James Webb Space Telescope. However ...

Venus is very bright right now and can be seen with the naked eye just after sunset. Using a telescope, backyard astronomers ...

They are objects so massive they warp space and time to a point that even light cannot escape their pull, making them invisible. In the past, astronomers have found them by using X-ray and radio ...