gravity_tug
© NASAA gravity tug
San Francisco - In the movie version of stopping an asteroid from hitting Earth popularized by Armageddon, a few brave Americans quickly head out to the near-Earth object and blow it up.

The reality will be far less dramatic, former astronaut Rusty Schweickart told scientists at the American Geophysical Union meeting here Wednesday. Asteroid-deflection efforts will have to start years before a prospective impact and will have to be essentially international.

Read the full article on Wired.com