Every December, the Geminids light up the night sky in one of the biggest meteor showers of the year. As our Parker Solar Probe swoops around the Sun—closer than any spacecraft in history—it's helping uncover how these shooting stars came into existence:
Editor’s note: This blog post was updated to include more information about the paper published in The Planetary Science Journal.
However, the Geminid stream seems to originate from an asteroid – a chunk of rock and metal – called 3200 Phaethon. Asteroids like Phaethon are not typically affected by the Sun’s heat the way comets are, leaving scientists to wonder what caused the formation of Phaethon’s stream across the night sky.
The research builds on previous work by Szalay and several of his Parker Solar Probe mission colleagues, including the Geminids direct images captured by Karl Battams’ team, to assemble a picture of the structure and behavior of the large cloud of dust that swirls through the innermost solar system.
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