News and Views: Fermi finds antimatter from thunderstorms; Quasars help judge Earth's internal magnetic field; A little bit of minor planet Vesta goes a long way; Kepler's rocky Earth; Mars before Space Age; NASA balloons again

Details News and Views: Fermi finds antimatter from thunderstorms; Quasars help judge Earth's internal magnetic field; A little bit of minor planet Vesta goes a long way; Kepler's rocky Earth; Mars before Space Age; NASA balloons again News and Views: Fermi finds antimatter from thunderstorms; Quasars help judge Earth's internal magnetic field; A little bit of minor planet Vesta goes a long way; Kepler's rocky Earth; Mars before Space Age; NASA balloons again

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011a%26g....52a...7.&link_type=abstract

Astronomy & Geophysics, Volume 52, Issue 1, pp. 1.07-1.07.

Physics

Geophysics

Scientific paper

The orbiting Fermi Gamma-ray Space Telescope has detected not only gamma-ray bursts and energetic electrons coincident with thunderstorms on Earth, but also positrons: terrestrial thunderstorms produce antimatter.
An estimate of the strength of the Earth's internal magnetic field can be made thanks to the radio signals from distant quasars. This in turn provides information about the power of the geodynamo.
A near-Earth asteroid identified as coming from the minor planet Vesta holds a key to the structure of this body, to be visited in August by the NASA space mission Dawn.

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