Astronomy

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  How many planets have we discovered? See all 786 illustrated to scale

  21 Jun 2012:

  Randall Munroe, author of award-winning webcomic XKCD, has created a scale-diagram of every planet identified by man to date. Browse all 786 in his original graphic

• Science Weekly podcast: Citizen science

  Audio (22min 38sec), 18 Jun 2012:

  These days anyone can contribute to a great scientific endeavour, whether it's astronomy, molecular biology or sleep research. Clare Freeman investigates the growing importance of citizen scientists and crowdsourced research

• Secretive US military space shuttle lands itself at California base

  16 Jun 2012:

  Though air force says X-37B launches are for testing, classified payload has led to speculation that it contains a spy satellite

• Patrick Moore: My family values

  16 Jun 2012: The astronomer and broadcaster talks about his family

• What they didn't tell you about the transit of Venus

  12 Jun 2012:

  Rebekah Higgitt: Despite an avalanche of media coverage, few mentioned the main historical reason for measuring transits of Venus

• 'Oldest galaxy' discovered using Hawaii telescope

  12 Jun 2012: Japanese astronomers on Hawaii say they have found a galaxy 12.91bn light years away

• Starwatch: The Clouds of Magellan

  10 Jun 2012:

  Alan Pickup says observations of the Clouds of Magellan has revealed much about stellar evolution

• Just Six Numbers: The Deep Forces that Shape the Universe by Martin Rees – review

  8 Jun 2012:

  Tim Radford: The astronomer royal addresses the cosmic coincidence that six numbers in physics are just right for the emergence of galaxies, stars, chemistry and people

• Transit of Venus: highlights from the once-in-a lifetime event

  6 Jun 2012:

  Venus passed between the sun and Earth, and we collected reactions, science and culture from the once-in-a lifetime transit

  • Gallery of Venus making its last transit until 2117

• Transit of Venus captures the imagination of a worldwide audience

  6 Jun 2012: Alok Jha: This year's transit of Venus was an international social event, with millions in the UK also watching a BBC Horizon special

• After the transit of Venus, what next?

  6 Jun 2012:

  Telescopes at the ready: here are the forthcoming big astronomical events to look out for

• The extraordinary 2,000-year-old computer that you've never heard of

  6 Jun 2012: The Antikythera mechanism was designed to predict movements of the sun, moon and planets. Why isn't it better known?

• Last transit of Venus this century draws stargazers around the world

  6 Jun 2012: Astronomers say they hope rare planetary spectacle – the last for 105 years – will spark people's curiosity about universe

• Venus transiting the sun – in pictures

  Gallery (21 pictures), 6 Jun 2012:

  One of the rarest astronomical events occurred on Tuesday and Wednesday (5 and 6 June) when Venus passed directly between the sun and Earth, a transit that will not occur again until 2117

• Transit of Venus – as it happened

  6 Jun 2012:

  Join us as we track the final time that Venus will cross the sun in our lifetime with tidbits of history, snatches of science and scraps of literature to enhance the viewing
  • All times ET

  MORE: Highlights from this live blog

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