Spotting Earth-threatening asteroids is tough, partly because the sky is so big. However insects offer an answer, since they figured out long ago how to look in many directions at once.
ESA - Flyeye: ESA's bug-eyed asteroid hunter
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ESA in urgent call for 'eyes on the sky' after 'surprise' asteroid encounter
Bug-eyed asteroid hunter: ESA's Flyeye telescope
ESA in urgent call for 'eyes on the sky' after 'surprise' asteroid encounter
Asteroid news: ESA offers stark warning if HUGE asteroid was Earth-bound 'I would pray', Science, News
ESA - Flyeye: ESA's bug-eyed asteroid hunter
Asteroid news: ESA offers stark warning if HUGE asteroid was Earth-bound 'I would pray', Science, News
8th IAA Planetary Defense Conference 2023 - IAA
ESA in urgent call for 'eyes on the sky' after 'surprise' asteroid encounter