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. 292: The Oort Cloud

February 4th, 2013

Episode 326 of 459 episodes

The very outer reaches of the Solar System is a region of space known as the Oort Cloud, which may extend as far as a light-year from the Sun. We only know about the Oort Cloud because that's where long-period comets come from, randomly falling into the inner Solar System from time to time.