Space

Time Travel With Your Fridge?

If the history of thermodynamics can teach us anything, it is that modest entropy reversals have not taken us back in time at all. But it is more fun to think otherwise, says guest Jimena Canales.

Is Humanity Unusual In The Cosmos?

Commentator Adam Frank talks with Harvard astrophysicist Avi Loeb about exo-civilizations, techno-signatures, and the search for alien life — living or long-gone.

Chinese Space Lab Crashes To Earth

Tiangong-1, an abandoned Chinese orbiting lab, re-entered the atmosphere over the South Pacific Ocean Sunday evening, fulfilling predictions by the European Space Agency.

You Can't Fall If There's No Gravity

Astronaut Andrew Fuestel has been to space three times. He says he has a mild fear of heights, but he can push through it. He's OK after reaching hundreds of miles above the Earth.

Wrinkling Time To Heal A Family

Showing science's enchanting side has the almost magical effect of opening new portals to what is possible, says astrophysicist Marcelo Gleiser.