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Asteroid 2024 YR4 Downgraded to Minimal Collision Risk After Global Observations

NASA and international teams confirm that the asteroid once labeled a 'city killer' poses a near-zero threat to Earth in 2032.

  • Asteroid 2024 YR4, initially considered a potential hazard with a 3.1% chance of impact in 2032, now has an impact probability of just 0.0017% after updated trajectory analysis.
  • The asteroid, measuring approximately 55 to 90 meters in diameter, triggered a Level 3 alert on the Torino Impact Hazard Scale before being downgraded to Level 1 and likely soon to Level 0.
  • NASA's Planetary Defense Coordination Office and international partners, including the James Webb Space Telescope, played key roles in refining YR4's orbit and assessing its risk.
  • Efforts to detect and track near-Earth objects have improved significantly, with NASA planning the 2027 launch of the NEO Surveyor infrared telescope to identify more hidden threats.
  • The successful 2022 DART mission demonstrated asteroid deflection capabilities, but experts emphasize the need for further research, funding, and global coordination to enhance planetary defense strategies.
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