Waspie_Dwarf Posted March 21 #1 Share Posted March 21 (IP: Staff) · Earth at higher risk of big asteroid strike, satellite data suggest “It would be in the range of serious crap happening.” Quote THE WOODLANDS, TEXAS—At a basic level, humanity’s survival odds come down to one thing: the chances of a giant space rock slamming into the planet and sending us the way of the dinosaurs. One way to calibrate that hazard is to look at the size of Earth’s recent large impact craters. And a provocative new study suggests they are bigger than previously thought—meaning Earth is more at risk of getting hit hard, says James Garvin, chief scientist of NASA’s Goddard Space Flight Center, who presented the work last week at the Lunar and Planetary Science Conference. “It would be in the range of serious crap happening.” Using a new catalog of high-resolution satellite imagery, Garvin and his colleagues identified large rings around three impact craters and one probable one that are 1 million years old or younger. To Garvin, the rings imply the craters are tens of kilometers wider, and record far more violent events, than researchers had thought. Read More: American Association for the Advancement of Science 2 1 Top Link to comment Share on other sites More sharing options...
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!Register a new account
Already have an account? Sign in here.Sign In Now