00:00Was Greece's glowing cloud a UFO?
00:02The truth will shock you.
00:05It was just rocket exhaust high above the Earth, not aliens.
00:10Sunlight hitting tiny ice crystals made the amazing glow.
00:14It looked so alien.
00:16This space jellyfish effect happens often.
00:19It's just simple physics.
00:20So no aliens, just incredible science.
00:24Find more fascinating facts at the link in bio.
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