The new Errol Morris series Wormwood on Netflix cannot be missed! Also check out new episodes of Once Upon a Time and Hawaii Five-0.
The possible exotic origin of Earth's oceans is detailed.
The Season 4 premiere explains how an auto engine holds within it the history of the universe.
A look at worlds much stranger than Earth. Some of these strange worlds don't have stars, others are made out of diamonds. Also: whether another Earth-like planet will ever be found.
The deadliest spots in the cosmos are explored.
Why supermassive black holes grow so large.
How Earth may be impacted by the heliosphere.
Examining the universe's mechanisms, structures and phenomena in this documentary series featuring CGI and expert commentary.
Download the TV Guide app for iPhone, iPad and Android!