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Plant Pathogens Observed From Orbit

What can farmers learn from physicists? This month in Naked Astronomy we'll find out how satellite imaging can help to understand and control crop diseases, as well as how...
25 June 2012
Presented by Ben Valsler, Carolin Crawford, Dominic Ford. 

Shark_Bay_Phytoplankton_in_Bloom.jpg

NASA's Terra satellite captured this image of phytoplankton in bloom in Australia's Shark Bay on November 6, 2004.
Credit: 
CC0 - NASA
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What can farmers learn from physicists? This month in Naked Astronomy we'll find out how satellite imaging can help to understand and control crop diseases, as well as how precisely timed pulsars point to gravitational waves. Plus, a roundup of space science news and the answers to your astronomy and cosmology questions.

In this episode

Potato with Blight

01:31 - Studying Crop Diseases from Space

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Studying Crop Diseases from Space
with Dr Hugh Mortimer, Rutherford Appleton Laboratories

The distant exoplanet TrES-2b, shown here in an artist's conception, is darker than the blackest coal.

09:00 - Exoplanets Around Low Metallicity Stars

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Exoplanets Around Low Metallicity Stars

Artist's concept of NuSTAR on orbit. NuSTAR has a 10-m (30') mast that deploys after launch to separate the optics modules (right) from the detectors in the focal plane (left). The spacecraft, which controls NuSTAR's pointings, and the solar panels...

13:13 - NuSTAR - a New X-Ray Telescope

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NuSTAR - a New X-Ray Telescope

17:39 - If the Earth stopped spinning, would things get heavier?

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If the Earth stopped spinning, would things get heavier?

19:24 - Does Mars have a magnetic field?

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Does Mars have a magnetic field?

The Great Red Spot as seen from Voyager 1 This dramatic view of Jupiter's Great Red Spot and its surroundings was obtained by Voyager 1 on February 25, 1979, when the spacecraft was 5.7 million miles (9.2 million kilometers) from Jupiter. Cloud...

24:29 - News from the RAS

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News from the RAS

33:45 - How do galaxies collide in an expanding universe?

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How do galaxies collide in an expanding universe?

Ripples on water - wonderful stuff

37:07 - Pulsars Point to Gravitational Waves

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Pulsars Point to Gravitational Waves
with Chiara Mingarelli, University of Birmingham

47:42 - How will SETI confirm a finding?

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How will SETI confirm a finding?

51:53 - Does lightning happen elsewhere in the universe?

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Does lightning happen elsewhere in the universe?

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