"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." ...

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 ...

Rather than solid arms, spiral galaxies may show density waves—regions where matter slows down and bunches up, like cars in ...

Using the James Webb Space Telescope, a collaboration of NASA and its European and Canadian counterparts, a team of ...

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

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 ...

Using data from space telescopes and other instruments, astronomers, cosmologists, and astrophysicists are able to deduce and ...

What it is: Thousands of galaxy groups ... when the James Webb Space Telescope (JWST) peered next to the lion, it revealed ...

Instead of using thrusters, SPHEREx relies on a system of reaction wheels to control its orientation. The observatory will ...

The best telescopes allow you to observe the night sky in more detail — view our solar system and deep space with these ... diameter for the planets to revolve greater light-gathering, and ...

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