But more importantly, we know a bit more about why the galaxy is the way it is.
But where is this stellar river heading?
Two stars enter, one star leaves
The Gaia satellite charts stars like never before.
You can see your house from here
The craft has been undergoing tests before its original planned launch date of November 20.
From the outside, galaxies appear as a mass of stars orbiting a dense center. But inside, they are more complex,...
The biggest, most sensitive digital camera ever constructed for a space mission has been built by the European Space Agency,...
Like science, tech, and DIY projects?
Sign up to receive Popular Science's emails and get the highlights.