Ripples in the fabric of space-time from monumental collisions between black holes, and how scientists are trying to measure them with lasers and mirrors. From LIGO and the National Science Foundation.

An army of high-tech telescopes, led by Hubble in space, has delivered an unprecedented chain of discoveries about how galaxies took shape, how stars live and die, and how life arose. What are we learning about the universe and ourselves in this Age of Hubble?

Follow Dr. Ben Longmier and his team into the rugged Alaskan wilderness on a quest to build a whole new type of rocket engine. Their goal is to test sensitive components by launching them into radiation-filled environments of space aboard helium balloons. Their goal is to revolutionize space trav...

A fury is building on the surface of the Sun – high-velocity jets, a fiery tsunami wave that reaches 100,000 kilometers high, rising loops of electrified gas. What's driving these strange phenomena? How will they affect planet Earth? Find the answers as we venture into the seething interior of ou...