NASA Tweets More 'Cosmos' Photos for Space Lovers

The universe is full of unseen elements, but the sixth episode of Cosmos: A Space-Time Odyssey helps viewers visualize things they'd likely never see without a microscope or top-of-the-line telescope.

From entire ecosystems that exist in a droplet of water to the atoms that make up the center of a star, "Deeper, Deeper, Deeper Still" explains how tiny particles may hold the key to understanding how the universe has expanded from the size of a marble into what it is now.

Cosmos is a revamped version of astronomer Carl Sagan's 1980s series by the same name, and aims to teach viewers about the universe. It is hosted by Neil deGrasse Tyson, an astrophysicist and director of the New York-based Hayden Planetarium, who was mentored by SaganFamily Guy creator Seth MacFarlane serves as executive producer of the show, which is slated for 13 episodes, and airs Sundays at 9 p.m. on Fox Read more...