groundbased

The next step to understanding exoplanets is to understand their atmospheres better. Astronomers can determine a planet’s mass, density, and other physical characteristics fairly routinely. But characterizing their atmospheres is more…

For nearly all of the natural history of planet Earth, the sights of a clear, dark night sky has been accessible to all of our inhabitants. Only since the dawn of widespread electrification has artificial lighting become a hinderance to…