The Sky at Night – 10 October 2021 – BBC Four

Exoplanets and Us – Of the 100 probes that have been sent out into space, only one probe – Voyager 2 in 1989 – has ever sent back any information about the solar system’s outer planets. From afar, they seem featureless and devoid of any significant geological activity. Since then, long-range telescopes have shown that there is much more to Nepture and Uranus than previously thought and that they both warrant closer inspection. Time, however, is of the essence. Deep-space missions are dependent on Jupiter. The slingshot effect it provides to move probes along the way is only available to us every 25 years.



About The Sky at Night

Your monthly journey through the fascinating world of space and astronomy with the latest thinking on what’s out there in space and what you can see in the night sky.

This show is broadcast on BBC Four, also known as the British Broadcasting Corporation.

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