Close encounters of the stellar kind
A star flashed past our solar system about 70,000 years ago. Did our ancestors even notice it? P Rajendran About 70,000 years ago two stars in a free spin careened…
The rock that shook the earth
The meteorite that brought about dinosaur extinction also sparked volcanic eruptions throughout the world’s oceans Leif Karlstrom, University of Oregon and Joseph Byrnes, University of Minnesota The end of the…