Mapping 2 billion stars: How Gaia transformed our view of the Milky Way
The European Space Agency's (ESA) Gaia spacecraft concluded its sky-scanning mission after mapping the Milky Way for more than 10 years.
The Gaia Space Telescope.(photo credit: ESA/Gaia/DPAC, ESA/ATG medialab, CC-by-sa 3.0 IGO)