Supernovas may have played a role in two of Earth’s largest mass extinctions, study suggests
New research suggests the violent explosions of dying stars may have caused two of Earth’s biggest mass extinctions millions ...
KOAT Albuquerque3d
Supernovas may have had a role in two of Earth’s largest mass extinctions, study suggests
What we just want to do is draw attention to the numbers ... a 1-centimeter-thick (0.4-inch-thick) layer of sedimentary rock rich in iridium, an element rare on Earth’s surface but common ...