Have you been keeping up with The Boston Globe’s Hubble Advent Calendar? Today’s picture is totally worth talking about, and gives me a chance to tell you about these little guys that just hang-on to our galaxy: globular clusters. When you look out at a galaxy — pretty much any galaxy — you’ll find these tiny clumps of light surrounding it.
These clumps are actually amazing, dense collections of stars! If you look out at the nearest star to us, it’s Proxima Centauri, located just over four light years away.
