Nina investigates why astronauts float in space with the help of Felix her touch neuron.

Originally released by BBC, 2013. Streaming video file encoded with permission for digital streaming by Infobase on November 17, 2016.

Meet the Neurons (0:55); --Why Do Astronauts Float in Space? (2:22); -- Senses Experiment (3:25); -- Is Earth a Magnet? (2:41); -- What it Feels Like to Float (2:19); -- Summary: Why Do Astronauts Float in Space? (0:38); -- Credits: Gravity—Nina & the Neurons: Earth Explorers (1:33); .