Will Japan retrieve an asteroid sample?

Grabbing a lump of an asteroid, and what causes tip of the tongue experiences?

08 February 2019

Presented by Chris Smith.

Production by Chris Smith.

RYUGU-ASTEROID

The asteroid Ryugu, out between the orbit of Earth and Mars, as photographed by the JAXA Hayabusa2 spacecraft.

Credit:

JAXA, University of Tokyo

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The Japanese mission to bring back a sample of an asteroid, are changes in Earth's magnetic field linked to climate change, what causes tip-of-the-tongue experiences when you cannot remember a word, why does the Moon look much larger on the horizon, how do farts form and can farts be harnessed to power things? And is a TV screen next to my bed bad for me? Will mobile phone use do me harm? Why flowers and chocolates for Valentine's Day? Join Dr Chris for this week's crop of questions and answers...