We can judge the value of any scientific endeavour based on how much of our knowledge it overturns or transforms.

ESA’s decade-long Milky Way Gaia mapping mission still has tons of data to release over the next few years. Expect surprises.

The Milky Way -- no, not the candy bar -- is Earth's home galaxy ... much more robust out in the middle of nowhere compared with inside a major metropolitan area. LightPollutionMap.info has ...