Astronomers are excited about the first test images released today from the Vera C. Rubin Observatory, which show the ...

Featuring never-before-seen views of galaxies and more than 2,100 newly discovered asteroids, the observations are only a ...

A decently dark site in a rural area has a sky background of about 21 mag/arcsec 2. In the Rocky Mountains in Colorado I’ve been to sites a bit darker than this, and it’s truly spectacular.