Hayabusa2's record-breaking flyby of Torifune proves that precise asteroid deflection is within reach — humanity now has real tools to protect Earth. Getting a spacecraft within 800 meters of a fast-moving space rock at 18,000 kilometers per hour is a monumental technical achievement that directly advances planetary defense. Every close-up image and surface data point collected makes future deflection missions more effective and better targeted.
Flybys alone won't cut it when asteroids like Apophis and Bennu keep making close passes with Earth, and deflection still requires years of advance warning that may never come. A fragmentation-based system that can neutralize threats days or even hours out is far more practical than precision maneuvering that demands perfect timing. Planetary defense needs serious funding and a last-line defense strategy, not just impressive photo ops.
Hayabusa2's flybys are being sold as civilization-saving breakthroughs when they're mostly long, expensive science expeditions wrapped in planetary-defense marketing. After years of speculation, we may arrive in 2031 only to learn 1998 KY26 is just another rock — or even old space junk. While genuine planet protection is undoubtedly a good thing, these hyped up missions often race far ahead of what they actually deliver.
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