For Commerce / GDA
05/10/2019 | 08: 13 p.m.
the Australian National University (ANU) have discovered that Andromeda, the
nearest galaxy to the Milky Way, has destroyed several smaller galaxies
In the last billion years, a study published Wednesday in the journal Nature revealed.
led by Dougal Mackey of the ANU and Geraint Lewis of the University of
Sydney, identified, in large streams of stars, the remains of these
ancient galaxies, which were smaller than Andromeda and were swallowed up
10,000 million years ago, when it was still being formed.
stressed the importance of the finding by pointing out the forecasts that point to
that the Milky Way will collide with Andromeda in about 4,000 million years, of
there it is useful to “know what kind of monster our galaxy faces to
discover the final destination of the Milky Way ”.
it has a stellar halo much larger and more complex than the Milky Way, which
indicates that he has cannibalized many more galaxies, possibly larger than
this, "said Mackey.
In 2018, another
study by an international team revealed that Andromeda ended two years ago
millions of years, with a massive galaxy, sister of the Milky Way.
that, by tracking down the remains of these smaller galaxies with clusters
embedded stellar, scientists were able to analyze the way Andromeda
He drew them and swallowed them.
has shed light on the way the Milky Way has grown and evolved
for billions of years, a goal that experts pursued
to, according to Mackey, "understand how these were formed and evolved
cosmic archaeologists who, instead of in human history, we dig in the
fossils of dead galaxies a long time ago, ”said Professor Geraint