James Garvin

On its official website, NASA mentions that the chances of an asteroid large enough to cause a global catastrophe (about one kilometer in width) striking the Earth is once every 100,000 years on average. However, a NASA chief scientist…

A top NASA scientist is warning that the threat of a massive asteroid striking Earth is much more fearsome than previously thought.James Garvin, chief scientist of NASA’s Goddard Space Flight Centre, said, bluntly: “It would be in the range…