![]() 'This is the first time we have clear evidence of glasses on Earth that were created by the thermal radiation and winds from a fireball exploding just above the surface,' said the study's lead author Pete Schultz, of Brown University. They concluded that the minerals are likely the remains of an extraterrestrial object - most likely a comet - streamed down after an explosion that melted the sandy surface below. Those minerals closely match the composition of material returned to Earth by NASA's Stardust mission, which sampled the particles from a comet called Wild 2, the authors said. ![]()
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