The Geminids put on a stunning night spectacle as they pass by Earth every December.
originate from an asteroid , which does not generally form a tail. Because an asteroid is composed of rock and metal, it is less affected by the Sun's heat than comets.
Therefore, it has been challenging to determine how this asteroid triggers the meteor shower. Scientists had previously only investigated Geminids using ground-based instruments. “However, dust grains pelt the spacecraft along its path, and the high-speed impacts create unique electrical signals or plasma clouds. These impact clouds produce unique electrical signals that are picked up by several sensors on the probe’s FIELDS instrument, which measures electric and magnetic fields near the Sun,” explained the NASA post.The scientists built a model using the data gathered by the probe and combined it with three different meteor shower creation scenarios.
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