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Galaxies

Life and Death in Nearby Galaxies

New images of nearby galaxies and their surroundings reveal details in galactic formation and evolution — and puzzles that remain to be solved.

Magellanic Clouds

Milky Way

How Our Largest Dwarf Galaxy Keeps the Others In Line

New research may explain why satellite galaxies align themselves around the Milky Way

wo spiral galaxies appear as light colored swirls on either side of an orange star.

Galaxies

Astronomers Look into the Past of Local Dwarf Galaxies

A combination of simulations and observations indicates that galaxies like the Large Magellanic Cloud control when punier dwarfs plunge into large galaxies.

ALMA image of quasar merger

Astronomy & Observing News

60-Second Astro News: A Carnivorous Quasar and a Galaxy Ghost

In astronomy news this week: The most luminous quasar known in the cosmos is devouring three galaxy companions, while a newly discovered ghostly satellite of the Milky Way hints at hordes more just waiting to be found.

Composite image of dwarf spheroidal galaxy Donatiello I

Astronomy & Observing News

Dwarf Galaxy Found by Amateur

Donatiello I is a tiny galaxy about 10 million light-years away, and it was discovered by an Italian hobbyist with a homemade telescope.

Milky Way

Milky Way's New Neighbor: A Giant Dwarf

Astronomers have discovered a “feeble giant”: one of the largest dwarf galaxies ever seen around the Milky Way.

Gravitational Lens SDP.81

Galaxies

Dark Dwarf Galaxy Discovered

Astronomers using the ALMA array of radio dishes have detected a dwarf galaxy 4 billion light-years away by the pull of its dark matter.

Ripples in the Milky Way's Disk

Galaxies

A Galaxy Hit-and-Run

Ripples found in the Milky Way’s disk reveal our galaxy survived an ancient hit-and-run. Now, astronomers might have caught the culprit.

Potential dwarf galaxies

Cosmology

New Dwarf Galaxies Near Milky Way

Astronomers have found a set of new dwarf galaxy candidates near the Milky Way Galaxy, a discovery crucial to understanding dark matter.

Cosmology

Dwarf Galaxies Packed a Mighty Punch

Light from the puniest galaxies played a bigger role in shaping the early universe than previously thought.

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