galaxy

Our solar system has been orbiting the Milky Way's black hole heart for 4.6 billion years. But it is hard to pin down exactly how many trips around the galaxy our sun has made during that time.

The early galaxy AzTECC71 is so far away it keeps disappearing from telescope observations. A new study by the James Webb Space Telescope finally pins it down.

Located about 2.5 million light-years from our solar system, Andromeda is the most distant object visible to the naked eye.

Space photo of the week The Gemini South telescope captured the chaotic aftermath of a billion-year-old collision between two spiral galaxies — and their super-close supermassive black holes.

A Milky Way doppleganger discovered in the early universe suggests some key physical ingredient is missing from cosmological models.

Several exoplanets at the edge of our galaxy could have formed continents — and advanced life — 5 billion years earlier than Earth, new research suggests.

Hubble's image of two colliding galaxies, known as Arp 142, show how a small galaxy's gravity has shredded a once-large spiral into a birdlike figure.

Arp 107 hosts a special spiraling 'Seyfert' galaxy connected to a smaller galaxy by a 'bridge' of dust and gas.

Thousands of disk galaxies like our own Milky Way were spotted in the early universe, where they shouldn't exist.

A team of astronomers has used a tricky technique to study an ancient galaxy previously lost in the glare of a blazing quasar.