Bootes Void is around 330 million light-years wide. The universe is a vast expanse that contains everything beyond our home planet Earth. It has several galaxies, stars (or planets), black holes and ...

When looking up at the sky at night, it’s easy to get the impression that the stars go on forever in fairly uniform fashion. We know, of course, that this isn’t the case. Stars coalesce into galaxies, ...

Most of us would consider Bootes the Bear Guard a spring constellation. That's when it first appears in the eastern sky, following the tail of Ursa Major the Great Bear as the snow drifts recede. Come ...