Asteroid attack 3.9 billion years ago may have enhanced early life on Earth, says CU-Boulder study
Wednesday, May 20, 2009 - 17:42
in Astronomy & Space
The bombardment of Earth nearly 4 billion years ago by asteroids as large as Kansas would not have had the firepower to extinguish potential early life on the planet and may even have given it a boost, says a new University of Colorado at Boulder study.