Massive 19-mile-wide crater in Greenland actually much older than we thought, study says
The massive 19-mile-wide Hiawatha crater underneath the northwestern ice sheet in Greenland is millions of years older than previously thought, according to new research published Wednesday in the peer-reviewed scientific journal Science Advances. The crater, which is big enough to swallow Washington, D.C., was first discovered in 2015 and presumed to have formed…
bubmagMarch 11, 2022