The Gaia mission, launched by the European Space Agency, has completed a decade of groundbreaking astronomical observations, collecting over three trillion data points on two billion stars and ...

This iconic star attracted the attention of 19th-century astronomers to yield some of the first proper motion and parallax measurements, techniques used by Gaia on some two billion stars.

Gaia was launched at the end of 2013 and was ... of billions of stars with increasing accuracy thanks to the so-called parallax measurement. The instrument was intended to lay the foundation ...