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Hubble finds dwarf galaxy in our cosmic neighbourhood | newkerala.com #96974

Hubble finds dwarf galaxy in our cosmic neighbourhood | newkerala.com #96974

Our Milky Way galaxy has another neighbor. This one is a lot closer, and it was discovered completely by accident.

The find was fortuitous.

While analyzing stars in cluster NGC 6752, astronomers using the NASA/ESA Hubble Space Telescope encountered a tiny and faint spherical dwarf galaxy 30 million light-years away which they have nicknamed Bedin 1.

The Hubble images revealed an odd clump of stars.

After a careful analysis of their brightness and temperatures, the astronomers concluded that these stars did not belong to the cluster which is part of the Milky Way, but rather they are more distant.

Astronomers, with the help of the Hubble Space Spyglass, have just done a startling opening: the constellation, considered component of our own star system, actually pertain to a previously unexplored star system, which is located 30 million light years away in a particularly remote of space area. Bedin 1 is a fraction of the size of the Milky Way and is classified as a dwarf spheroidal galaxy. In the Local Group of Galaxies, scientists have spotted 36 dwarf spheroidal galaxies, and 22 of them are satellite galaxies of our Milky Way.

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The discovery of Bedin 1 was a truly serendipitous find.

The galaxy, dubbed Bedin 1 by its discoverer, is distinct in its isolation.

And then there's Bedin 1's age. NASA has shared a stunning image of the dwarf galaxy that was captured by Hubble. The lower image, depicting the complete cluster, is a ground-based observation from the Digitized Sky Survey 2. As telescopes on the ground and in space become more sophisticated, it seems highly likely that it's only a matter of time before more nearby cosmic fossils are dug up. Awesome footage from NASA shows the camera zooming in on the "tiny" galaxy, dubbed "Bedin 1", surrounded by thousands of dazzling stars. Almost all the stars astronomers measured in Bedin 1 are small and old, implying the dwarf galaxy made all its stars in a single burst of activity some 10 billion years ago.

The 13.1 billion-year-old galaxy has been named Bedin 1, and according to NASA it is a "living fossil" from the early universe.

The team published their discovery January 31, in the Monthly Notices of the Royal Astronomical Society: Letters.

In the 1990s, the famous Hubble Deep Field image led NASA to believe there were about 200 billion galaxies in the universe.


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