All Things Space, UFOs, etc.A Giant Asteroid Hit Earth In Previously Unknown Mega Impact — But Its Crater Is Missing Posted on October 29, 2025 by Administrator A giant asteroid hit Earth — but its crater is missing. Scientists discovered a new field of ancient tektites — natural glass from impacts — spread across parts of South Australia. Their chemistry and age (~11 million years) mark a previously unknown giant asteroid impact. The kicker? No crater has been found yet. The find rewrites a chapter of Earth’s violent past and sharpens our thinking on planetary defense.