Astronomers have found a system of three supermassive black holes, all actively feeding, that appear to be combining into a ...

From signs of life on Mars to an interstellar visitor and weakening dark energy, 2025 reshaped space science, raising the ...

A supermassive black hole residing within the Large Magellanic Cloud (LMC) - a satellite galaxy - is on a collision course ...

Physicists have started to treat a once-fringe idea with surprising seriousness: that our entire observable universe might be ...

It’s the greatest cosmic murder mystery of the year: How did a black hole destroy a star—and what kind of black hole is the culprit? Normally, so-called “gamma ray bursts,” sudden flashes of extremely ...

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

Three merging galaxies host three active black holes, offering rare insight into galaxy and black hole growth.

APM 08279-5255 is a massive black hole (quasar) that contains about 140 trillion times the amount in all of Earth’s oceans ...

Black holes are dark, matter-devouring balls of gravity. Most of them are so far away that we don't need to worry about them.

Astronomers have decoded the hidden past of a distant red giant star by listening to tiny vibrations in its light, revealing ...

Astronomers have identified a massive cloud of water vapor surrounding a distant quasar, marking the largest single reservoir ...

What's the size of the Milky Way galaxy? Learn how, depending on your definition, the size can change.