A "land based explosion" rather than a meteorite is more likely to have killed a man and injured three others in a mysterious blast in Tamil Nadu last week, NASA scientists said on Wednesday.
Stephen Hawking, in his final book Brief Answers to the Big Questions, considered an asteroid collision to be the biggest threat to the planet. At this point, we are as well prepared as dinosaurs were when a 10-km wide asteroid hit the planet 65 million years ago, notes Kumar Abishek.
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