Galaxies

It’s unclear what these objects actually are, but evidence for them has been detected by NASA’s Chandra space telescope for years

NASA’s Roman Space Telescope will open a whole new window on the cosmos. Here are 10 things it’s likely to show us

Astronomers are lining up to leverage NASA’s soon-to-launch Nancy Grace Roman Space Telescope, which boasts capabilities unlike any previous off-world observatory

Spirals, ellipticals, irregulars, oh my!

Using the new Vera C. Rubin Observatory, astronomers are beginning the largest and deepest survey of the sky. What will they see?

Sometimes we mistake one kind of object with another to disastrous effect

The James Webb Space Telescope has found nearby brown dwarfs masquerading as far-distant galaxies. The discovery reinforces how, in astronomy, what you see isn’t always what you get

Characterizing the “Little Red Dots” to decipher the beginnings of galaxies

Messier 88 is an active galaxy with a central supermassive black hole that is gobbling up gas and dust

Deep surveys of the sky have turned up galaxies vastly larger than our own. Are there even bigger ones yet to be seen?

Debate still swirls around the nature of “little red dots,” black holes glimpsed in the early universe by the James Webb Space Telescope. A controversial new weigh-in may settle the matter

Our galaxy and its nearest large companion, Andromeda, may be headed for a collision on a cosmic scale. What happens then?