Tracking the threat of asteroids and comets

In 1994, astronomers watched in awe as the comet Shoemaker-Levy 9 crashed into the planet Jupiter, creating massive fireballs exploding with the force of six million megatons of TNT—equivalent to 600 times the world's nuclear ...

NASA reassures public that there is no asteroid threatening Earth

Numerous recent blogs and web postings are erroneously claiming that an asteroid will impact Earth sometime between Sept. 15 and 28, 2015. On one of those dates, as rumors go, there will be an impact—"evidently" near Puerto ...

page 6 from 23