“Eventually, scientists hope to have a defensive system, especially for rocks bigger than 30 miles wide (50 kilometers).”
– this doesn’t make sense if the one that took out the dinosaurs was 10 km wide. I think you meant 30 meters wide, if the one that hit Russia was 20 meters and did so much damage.
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“Eventually, scientists hope to have a defensive system, especially for rocks bigger than 30 miles wide (50 kilometers).”
– this doesn’t make sense if the one that took out the dinosaurs was 10 km wide. I think you meant 30 meters wide, if the one that hit Russia was 20 meters and did so much damage.