Space on MSN

Gaia mission measures metals in Milky Way stars

Milky Way stars that are high and low in metallicity have been mapped by the ESA Gaia mission. [Gaia spacecraft: Mapping the ...
Hosted on MSN

How Gaia revealed the Milky Way

Gaia was conceived as part of ESA's Horizon 2000+ campaign, a long-term development guide similar to the Decadal Survey used by American space research agencies. First proposed in 1993, Gaia was ...