Milky Way stars that are high and low in metallicity have been mapped by the ESA Gaia mission. Credit: ESA/Gaia/DPAC ...

On Jan. 15, 2025, the Gaia spacecraft took its last image. Then the craft ran a final round of engineering tests, fired its ...

Their analysis showed that the planet lies about 3,000 parsecs, or just under 10,000 light-years, from Earth. Its mass is ...

ESA's Gaia mission, the Very Large Telescope and other ground-based telescopes have discovered stellar black hole Gaia BH3.

Planetary alignments, a total lunar eclipse, and meteor showers are highlights to look for in the coming year.

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...

From new exoplanetary neighbors and a weakening dark energy to the best evidence for life on Mars and an interstellar comet ...

In the run up to Christmas, carols fill the air. Many have an astronomical twist, singing of the "Christmas Star" from the ...

Although we already know dozens of exoplanets without their own star, their masses could only be estimated. Now a precise ...

Illinois residents may be able to catch a peek of the first full moon of 2026 tonight. Here's when to venture outside.

Scientists discovered 128 new moons orbiting Saturn, bringing the planet’s total to 274. Many of these moons are “only a few ...