Jupiter
In Our Time27 Jul 2023

Jupiter

Jupiter is the largest planet in our solar system, and it’s hard to imagine a world more alien and different from Earth. It’s known as a Gas Giant, and its diameter is eleven times the size of Earth’s: our planet would fit inside it one thousand three hundred times. But its mass is only three hundred and twenty times greater, suggesting that although Jupiter is much bigger than Earth, the stuff it’s made of is much, much lighter. When you look at it through a powerful telescope you see a mass of colourful bands and stripes: these are the tops of ferocious weather systems that tear around the planet, including the great Red Spot, probably the longest-lasting storm in the solar system. Jupiter is so enormous that it’s thought to have played an essential role in the distribution of matter as the solar system formed – and it plays an important role in hoovering up astral debris that might otherwise rain down on Earth. It’s almost a mini solar system in its own right, with 95 moons orbiting around it. At least two of these are places life might possibly be found.

With

Michele Dougherty, Professor of Space Physics and Head of the Department of Physics at Imperial College London, and principle investigator of the magnetometer instrument on the JUICE spacecraft (JUICE is the Jupiter Icy Moons Explorer, a mission launched by the European Space Agency in April 2023)

Leigh Fletcher, Professor of Planetary Science at the University of Leicester, and interdisciplinary scientist for JUICE

Carolin Crawford, Emeritus Fellow of Emmanuel College, University of Cambridge, and Emeritus Member of the Institute of Astronomy, Cambridge

Episoder(1082)

Socrates in Prison

Socrates in Prison

Melvyn Bragg and guests discuss Plato's Crito and Phaedo, his accounts of the last days of Socrates in prison in 399 BC as he waited to be executed by drinking hemlock. Both works show Socrates prepar...

20 Feb 202550min

The Battle of Valmy

The Battle of Valmy

Melvyn Bragg and guests discuss one of the most consequential battles of recent centuries. On 20th September 1792 at Valmy, 120 miles to the east of Paris, the army of the French Revolution faced Prus...

13 Feb 202547min

Slime Moulds

Slime Moulds

Melvyn Bragg and guests discuss slime mould, a basic organism that grows on logs, cowpats and compost heaps. Scientists have found difficult to categorise slime mould: in 1868, the biologist Thomas Hu...

30 Jan 202551min

Vase-mania

Vase-mania

Melvyn Bragg and guests discuss eighteenth century 'vase-mania'. In the second half of the century, inspired by archaeological discoveries, the Grand Tour and the founding of the British Museum, parts...

23 Jan 202556min

Plutarch's Parallel Lives

Plutarch's Parallel Lives

Melvyn Bragg and guests discuss the Greek biographer Plutarch (c46 AD-c120 AD) and especially his work 'Parallel Lives' which has shaped the way successive generations see the Classical world. Plutarc...

16 Jan 202556min

The Habitability of Planets

The Habitability of Planets

Melvyn Bragg and guests discuss some of the great unanswered questions in science: how and where did life on Earth begin, what did it need to thrive and could it be found elsewhere? Charles Darwin spe...

9 Jan 202552min

Nizami Ganjavi

Nizami Ganjavi

Melvyn Bragg and guests discuss one of the greatest romantic poets in Persian literature. Nizami Ganjavi (c1141–1209) is was born in the city of Ganja in what is now Azerbaijan and his popularity soo...

2 Jan 202552min

The Hanoverian Succession

The Hanoverian Succession

Melvyn Bragg and guests discuss the intense political activity at the turn of the 18th Century, when many politicians in London went to great lengths to find a Protestant successor to the throne of Gr...

26 Des 202450min

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