Main content

Close Encounters of a Planetary Kind

Which planet is closest to Earth?

Which planet is closest to Earth? A ³ÉÈË¿ìÊÖ programme ‘The Sky at Night’ said it was Mars. But a listener isn't so sure. Tim Harford talks to David A. Rothery, professor of planetary geosciences at the Open University.

Producers: Ruth Alexander, Bethan Head
Presenter: Tim Harford

(Earth and surrounding planets/Getty images)

Available now

9 minutes

Last on

Tue 22 Jan 2019 02:50GMT

Broadcasts

  • Sat 19 Jan 2019 05:50GMT
  • Mon 21 Jan 2019 13:50GMT
  • Tue 22 Jan 2019 02:50GMT

Download this programme

Download this programme

Subscribe to this programme or download individual episodes.