NASA scientist’s ‘serious’ asteroid warning for Earth
Experts are warning the threat of an asteroid striking Earth may be more serious than previously thought. James Garvin, chief scientist of NASA’s Goddard Space Flight Centre, said his team had strong concerns that previous impact sites actually stretched tens of kilometres further than believed, Science.org reported. “It would be in the range of serious crap happening,” he said bluntly. Watch the latest News on Channel 7 or stream for free on 7plus >> Garvin is presenting new research on asteroid s at the Lunar and Planetary Science Conference in Texas. The research used new high-resolution satellite imagery, which he and his colleagues used to identify large rings around three impact craters. Garvin suggested that each impact or ring was substantially more violent than previously thought. He speculated they may have been 10 times more destructive than the largest nuclear bomb ever detonated, enough to blow part of the planet’s atmosphere into space. “Such topographic data pe...