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. 295: The Observable Universe

February 18th, 2013

Episode 329 of 459 episodes

We understand our place in the Universe because of our direct observations. We can see the light that traveled billions of light years across space to reach us. This sphere of space is the observable universe; everything we can detect. But it’s really just a fraction of the larger, unobservable universe. Today, we’ll talk about both.