Crash Course Astronomy: Brown Dwarfs

Last week's Crash Course Astronomy was particularly fun for me, because I love the topic of exoplanets. It's one of my favorite new fields of astronomy. But not my only favorite. Another is brown dwarfs, objects between the masses of planets and stars. I've been fascinated by them since long before the first one was discovered, and I was in the right place at the right time (NASA's Goddard Space Flight Center in 1997) to be able to help analyze Hubble spectra taken of one of the first ones ever ...