Early Milky Way look-alike

Galaxies

"Dead Ringer" for the Milky Way Found in Early Universe

A cosmic magnifying glass has revealed a Milky Way-like galaxy in the early universe that doesn’t conform to cosmologists’ expectations.

Cygnus A in radio

The Black Hole Files with Camille Carlisle

Odd Jets Might Signal Dual Black Holes

Off-kilter, curved, and otherwise unusual beams of plasma from galaxies’ cores might track the dueling dances of two supermassive black holes.

Herschel Sprint: NGC 4911

Milky Way

Milky Way May Be Made with Swapped Gas

High-powered simulations suggest that half of the material in the Milky Way could come from other galaxies.

Galaxies

The Making of a “Frankenstein” Galaxy

Astronomers take a second look at UGC 1382 — previously considered a typical elliptical galaxy — and reassess everything they know about its size, age, and formation.

super spiral and normal galaxies

Galaxies

Super Spiral Galaxies

Astronomers have identified 53 “super spirals” — spiral galaxies that are huge and incredibly luminous — as part of a project exploring archived observations.

An artist's impression of a damped-lyman alpha system

Galaxies

Seeing Shadows of Ancient Galaxies

A new technique lets astronomers measure nearly invisible clouds of hydrogen gas from across the universe.

massive galaxy evolution

Cosmology

Ancient Galaxies Seen Dying Inside-Out

Astronomers have found massive galaxies 3 billion years after the Big Bang that are dying from the inside out.

Galaxies

Question Reopened: How do Galaxies Grow?

Evidence from observations sheds doubt on cosmic cannibalism as a source for galaxy growth, suggesting that instead galaxies grow by pulling in gas from the intergalactic medium.

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