John Glenn's Firefly Mystery: Sunrise Unveils Space Ice Particles

1 min read
Source: tyla.com
John Glenn's Firefly Mystery: Sunrise Unveils Space Ice Particles
Photo: tyla.com
TL;DR Summary

Astronaut John Glenn reported thousands of tiny, luminescent particles swirling around his Friendship 7 capsule during the 1962 Earth orbit, prompting NASA concern about potential impact. The “fireflies” were later explained as sun-illuminated ice particles, a phenomenon confirmed on later flights.

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