Astrophysicist Paul Sutter and undergraduate astronomy & astrophysics major Anna Voelker have launched a new video series called We Don't Planet on space.com that explores and explains fascinating topics in astrophysics in 4-6 minute videos. Each episode explores a different topic, ranging from dark matter to dark energy to supernova explosions to gravitational waves. One even explains Just what is a parsec? 

See the full list of episodes for We Don't Planet on space.com.