Portrait of Lord Melvyn Bragg, host of In Our Time

Solar System

A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction. A large group of stars bound by gravitation is generally called a star cluster or galaxy, although, broadly speaking, they are also star systems.

12 episodes

Episodes in this category also belong to the following categories:

  1. Asteroids

    Melvyn Bragg discusses asteroids, once regarded as “the vermin of the solar system” but now viewed as key to our understanding of the beginning of time.

    3 November 2005

    listen ↗

    Featuring: Monica Grady, Carolin Crawford, John Zarnecki

     
  2. Astronomy and Empire

    Melvyn Bragg discusses the relationship between astronomy and the British Empire, how astronomical science provided a means for navigation and British naval control.

    4 May 2006

    listen ↗

    Featuring: Simon Schaffer, Kristen Lippincott, Allan Chapman

     
  3. Comets

    Melvyn Bragg and his guests discuss comets, the 'dirty snowballs' of the solar system which orbit the sun.

    17 January 2013

    listen ↗

    Featuring: Monica Grady, Paul Murdin, Don Pollacco

     
  4. Jupiter

    Melvyn Bragg and guests discuss the largest planet in our solar system.

    29 June 2023

    listen ↗

    Featuring: Michele Dougherty, Leigh Fletcher, Carolin Crawford

     
  5. Mars

    Melvyn Bragg and guests discuss the planet Mars. Named after the Roman god of war, Mars has been a source of continual fascination.

    11 January 2007

    listen ↗

    Featuring: John Zarnecki, Colin Pillinger, Monica Grady

     
  6. Mercury

    Melvyn Bragg and guests discuss the smallest planet in our solar system, what the Mariner 10 and Messenger missions have revealed and the hopes for the new BepiColombo mission.

    02 May 2024

    listen ↗

    Featuring: Emma Bunce, David Rothery, Carolin Crawford

     
  7. Saturn

    Melvyn Bragg and guests discuss Saturn, the most distant planet easily visible to the human eye, with over 60 moons and, with its rings, one of the most striking sights in space.

    14 January 2016

    listen ↗

    Featuring: Carolin Crawford, Michele Dougherty, Andrew Coates

     
  8. The Kuiper belt

    Melvyn Bragg and guests discuss the Kuiper Belt region, home to Pluto and countless remnants from the beginnings of our solar system.

    2 March 2017

    listen ↗

    Featuring: Carolin Crawford, Monica Grady, Stephen Lowry

     
  9. The Moon

    Melvyn Bragg and his guests discuss the origins, science and mythology of the moon. Man may have landed on the moon, but our 'twin planet' in many ways still remains a mystery.

    3 November 2011

    listen ↗

    Featuring: Paul Murdin, Carolin Crawford, Ian Crawford

     
  10. The Planets

    Melvyn Bragg discusses our knowledge of the planets in both our and other solar systems. What causes them to form and what is the likelihood of there being another with properties similar to Earth’s?

    27 May 2004

    listen ↗

    Featuring: Paul Murdin, Hugh Jones, Carolin Crawford

     
  11. The Sun

    Melvyn Bragg and his guests discuss the science of the sun, source of all our energy.

    10 July 2014

    listen ↗

    Featuring: Carolin Crawford, Yvonne Elsworth, Louise Harra

     
  12. Venus

    Melvyn Bragg and guests discuss Earth's neighbouring planet, once thought very similar but now known to be extremely volcanic with a surface temperature of 450C.

    27 December 2018

    listen ↗

    Featuring: Carolin Crawford, Colin Wilson, Andrew Coates