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Rare Solar Event Causes Dramatic Expansion of Mars' Atmosphere

NASA's MAVEN spacecraft records significant drop in solar wind, providing valuable insights into Mars' interaction with solar phenomena and atmospheric loss.

  • NASA's MAVEN spacecraft observed a rare solar event in December 2022 that caused the solar wind to 'disappear', resulting in a significant expansion of Mars' atmosphere and magnetosphere.
  • The solar wind, a stream of charged particles from the Sun, dropped significantly in density, causing the Martian atmosphere to expand by thousands of kilometers.
  • The event provides valuable insights into the interaction between Mars and solar phenomena, and could help understand the physics behind water and atmospheric loss on Mars.
  • This is the first time such a phenomenon has been observed by MAVEN, and the data could be crucial for understanding extreme solar events as the Sun moves towards its solar maximum.
  • The findings could also have implications for understanding Earth-like planets outside our solar system and how they interact with their host stars.
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