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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

A blue spiral galaxy appears to be colliding -- and possibly moving through -- a dusty brown galaxy. Please see the explanation for more detailed information.

NGC 7714: Starburst after Galaxy Collision

Explanation: Is this galaxy jumping through a giant ring of stars ? Probably not. Although the precise dynamics behind the featured image is yet unclear, what is clear is that the pictured galaxy, NGC 7714 , has been stretched and distorted by a recent collision with a neighboring galaxy. This smaller neighbor, NGC 7715 , situated off to the left of the frame, is thought to have charged right through NGC 7714 . Observations indicate that the golden ring pictured is composed of millions of older Sun-like stars that are likely co-moving with the interior bluer stars . In contrast, the bright center of NGC 7714 appears to be undergoing a burst of new star formation. The featured image was captured by the Hubble Space Telescope . NGC 7714 is located about 130 million light years away toward the constellation of the Two Fish ( Pisces ). The interactions between these galaxies likely started about 150 million years ago and should continue for several hundred million years more , after which a single central galaxy may result.

Date March 17, 2024
Credit Image Credit: NASA , ESA , Hubble Legacy Archive ;
Processing & Copyright: Rudy Pohl
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.