Astronomy Cast

Wizzard Media

Science & Medicine, Natural Sciences

Chart Positions

Natural Sciences 11
Science & Medicine 27

Astronomy Cast brings you a weekly fact-based journey through the cosmos.


Ep. 290: Failed Stars

January 21st, 2013

Episode 324 of 459 episodes

If you get enough hydrogen together in one place, gravity pulls it together to the point that the temperature and pressures are enough for fusion to occur. This is a star. But what happens when you don't have quite enough hydrogen? Then you get a failed star, like a gas giant planet or a brown dwarf.