New images of a nearby dwarf galaxy have revealed a dense stream of stars in its outer regions, the remains of an even smaller companion galaxy in the process of merging with its host. The host galaxy ...

New image captures 'stealth merger' of dwarf galaxies Date: February 8, 2012 Source: University of California - Santa Cruz Summary: New images of a nearby dwarf galaxy have revealed a dense stream ...

The Andromeda Galaxy, located 2.5 million light years away, has fascinated observers for centuries. Once believed to be part ...

These final observations at Subaru in 2011 clearly showed the stealth merger of two dwarf galaxies. Modern cosmological theory posits that large galaxies were built up from smaller ones through an ...

The spiral galaxy NGC 1532, also known as Haley's Coronet, is caught in a lopsided tug of war with its smaller neighbor, the dwarf galaxy NGC 1531.

But the galaxy’s merger-mania continues. Astronomers see evidence that the Milky Way has gobbled up as few as five and perhaps as many as 11 small galaxies in the past few hundred million years.

This other recent Hubble image also shows a dwarf galaxy, one called NGC 5238. This one is located 14.5 million light-years away, but has a different and more complex type of structure.

D ozens of dwarf galaxies swarming around the Andromeda Galaxy like bees have been caught on camera by the Hubble Space Telescope, which took more than a thousand orbits of the Earth to take ...

This week’s image from the Hubble Space Telescope shows no less than three galaxies that are in the process of merging to become one, called IC 2431. Located 681 million light-years away in the ...

Elliptical galaxies are thought to be a product of a galaxy merger. When two galaxies of equal mass merge, their stars start to tug on one another with gravity, disrupting the stars' rotation and ...