NASA Mission To Study Magnetic Fields Launches Tonight02:14
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Tonight NASA will launch its 20-story rocket Atlas V into space to study Earth's magnetic field. What is the magnetic field and how does it affect us here on Earth? It's responsible for the beautiful aurora displays, but Here & Now's Jeremy Hobson speaks with Craig Pollack of NASA to find out more.

Guest

  • Craig Pollock, heliophysicist working on NASA's Fast Plasma Investigation.

This segment aired on March 12, 2015.

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