ONLINE TALKS

The Search for Dark Matter

A quick TED Talk in which astrophysicist Risa Wechsler explores how dark matter is key to the Universe’s origins.

bit.ly/RisaWechsler

Space junk

Alice Gorman journeys through the abandoned probes, crashed orbiters, discarded rovers and other debris left out in space thanks to human exploration.

www.youtube.com/ watch?v=T9NfLol6qEs

Rescuing Hubble

Former Shuttle astronaut Kathryn Sullivan, part of the mission to launch the famous Hubble Space Telescope, shares her experiences of a career in zero gravity.

bit.ly/Hubblerescue