Space

Modest temperature reversals have not taken us back in time at all, says guest commentator Jimena Canales.

Time Travel With Your Fridge?

by Jimena Canales

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.
Artist's rendering of the first planet outside of our solar system to be imaged orbiting a brown dwarf star, called the 2M1207 system.

Is Humanity Unusual In The Cosmos?

by Adam Frank

Commentator Adam Frank talks with Harvard astrophysicist Avi Loeb about exo-civilizations, techno-signatures, and the search for alien life — living or long-gone.
Visitors sit beside a model of China's Tiangong-1 space station in 2010, at the 8th China International Aviation and Aerospace Exhibition in Zhuhai in southern China's Guangdong Province. As forecast, China's defunct Tiangong 1 space station re-entered Ea

Chinese Space Lab Crashes To Earth

by Camila Domonoske

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.