"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." ...

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

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 ...

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

A puzzling discovery in NGC 1068 shows a flood of neutrinos but weak gamma rays. Scientists now suspect helium atoms ...

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

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

Astronomers using NASA’s James Webb Space Telescope have taken a major step toward understanding a puzzling type of planet ...

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

Astronomers have developed a computer simulation to explore, in unprecedented detail, magnetism and turbulence in the ...

Using the James Webb Space ... "sub-Neptune" planet that, while not present in our solar system, is what NASA says is among "the most common type of planet known so far in the galaxy.” ...