The European Space Agency,
or ESA, recently released detailed information on almost 2 billion stars in the Milky Way galaxy.
The data is
being collected in an effort to create the most complete map yet of our galaxy.
Astronomers hope to
use the data to better understand how stars are born and die, and how the Milky Way has changed over billions of years.
The data includes
new information like the age, size, temperature and chemical properties of stars.
This information can
be used, for example, to find out which stars were born in another galaxy and then moved to the Milky Way.
Gaia was also
able to find more than 100,000 starquakes. ESA compared starquakes to large tsunamis that go across stars.
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