Podcast: Dawn, Holst’s Planets and water on Mars

A radar profile of the south polar region of Mars. The bright feature at the top is the icy surface, and layers of ice and dust are seen extending about 1.5km deep. The brightest reflections from the base layer close to the centre of the image are interpreted as a pond of liquid water. Credit: ESA/NASA/JPL/ASI/Univ. Rome; R. Orosei et al 2018

A radar profile of the south polar region of Mars. The brightest reflections from the base layer close to the centre of the image are interpreted as a pond of liquid water. Credit: ESA/NASA/JPL/ASI/Univ. Rome; R. Orosei et al 2018

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In the latest episode, the BBC Sky at Night Magazine team look back on 100 years of Holst’s musical work The Planets and its influence on sci-fi soundtracks.

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Plus, we discuss the success of NASA’s Dawn mission at Ceres and Vesta, and speak to Roberto Orosei, an astronomer who led a recent study that found evidence of water on Mars.

Listen to the latest podcast from the makers of BBC Sky at Night Magazine