Andromeda galaxy was formed in 'recent' star crash: study

phys.org | 2/14/2018 | Staff
MonkeyBubble (Posted by) Level 3
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The Milky Way's neighbouring galaxy, Andromeda, was formed in a colossal crash between two smaller star systems no more than three billion years ago when Earth already existed, researchers said Wednesday.

Calculating the birth date of the galaxy has been a major challenge for astrophysicists given the vast age gap between the different stars it is made up of.

Study - Researchers - Paris - Observatory - Astronomer

For the latest study, French and Chinese researchers led by Paris Observatory astronomer Francois Hammer used "the most powerful available computers in France" to crunch about a terabyte of data—the equivalent of two million 500-kilobyte photos.

This allowed them to zoom in on "the physical mechanisms of the Andromeda formation, so lifting the veil on its origin," the observatory said in a statement.

The...
(Excerpt) Read more at: phys.org
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