Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy.

Astronomers used the James Webb Space Telescope for the largest and deepest sample of galaxy groups, some of which were up to ...

Astronomers have discovered the most distant and thus earliest spiral galaxy ever seen, using the James Webb Space Telescope (JWST). This "twin" of the Milky Way existed just 1 billion years after the ...

Warmer climates than Earth’s could accelerate life’s development, potentially increasing the number of planets with more ...

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 ...

This gas needs an enormous amount of energy to shine — more than normal stars can supply. The discovery, based on data from ...

I expect to see the existence of extraterrestrial life confirmed within the next few years. When it happens, let the moment sink in.

But when the James Webb Space ... light-years away. The universe is 13.8 billion years old, so these galaxies date back to the universe's early years. Just as gravity causes moons to orbit planets ...

Hubble is still going strong 35 years after it was launched into space. Celebrate its anniversary with some out-of-this-world images.

"We've always known that we need something to complete the puzzle, but we haven't really known what shape or form those missing pieces were going to be." ...

NASA’s Nancy Grace Roman Space Telescope is gearing up to unlock the deepest secrets of the universe with three ...