Science Podcasts

Naked Astronomy episode

Sat, 25th Dec 2010

Lessons from the Past - Exploring the History of Astronomy

Leipzig central library globe collection (c) Grubitzsch Waltraud; Source: German Federal Archive

This month, we read the history of Martian science in a collection of globes, and find out why it's important to understand ancient and aboriginal astronomy.  We find out why some Gamma Ray Bursts (GRBs) are shrouded in darkness, discuss the recent controversy around arsenic-using bacteria and get the high-speed low-down on the Hubble Space Telescope.  Plus, we tackle your questions on gravity, relativity and the edge of the universe.

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In this edition of Naked Astronomy

Full Transcript

  • 01:35 - Illuminating Dark Gamma Ray Bursts

    Gamma Ray Bursts are some of the most energetic events in the universe - but only around half of them are associated with a burst of visible light. New observations explain why half of them are in the dark...

  • 05:51 - Explaining the Elements in Earth's Crust

    Iron-loving elements like gold and cobolt are found in Earth's crust at greater concentrations that would be expected - when the Earth was still in it's molten phase, they should have been taken along with the iron, to the core. New models show where these elements may have com...

  • 08:38 - The Controversial Arsenic Loving Bacteria

    The discovery of bacteria that appear to thrive on toxic arsenic may have implications for our understanding of the chemistry of life, both on Earth and elsewhere. But the resulting criticisms and controversy may overshadow the discovery, by questioning the very way scientists ...

  • 11:30 - New Projects for Galaxy Zoo

    Galaxy Zoo - the project that uses the barinpower of it's users to identify interesting aspects in photographs of many thousands of galaxys - has announced two new projects: "Planet Hunters" and the "Milky Way Project".

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