We’ve found lots of “habitable” worlds but we don’t know what factors are needed for life. There are lots of reasons to search for planets around other stars—exoplanets. A big one is to find other ...

Google, YouTube and the PBS NewsHour took you aboard space shuttle Endeavour and the International Space Station for a live interview with Commander Mark Kelly and crew. Watch the full interview here.

A nuclear engineer reacts to an ambitious concept explored by PBS Space Time: could antimatter-powered spacecraft exist within our lifetime? This video breaks down how antimatter propulsion would work ...

The universe thrums with quantum fields; and the particles of matter and force emerge as vibrational manifestations of the deep symmetries of these fields. The layers and reflections of those ...