NASA Administrator Charles Bolden told members of Congress that if an asteroid the size that could wipe out any major city were headed to Earth today, all we could do is “pray.” Ed Lu testifies about the B612 Sentinel Mission solution to protect Earth for decades.

Read the Article: “Big Bangs: Asteroids Strike Earth More Often Than We Think”

Watch the Videos: “Early Warning Telescope Could Detect Dangerous Asteriods” and “B612 Impact Video“

NBC NEWS (April 22, 2014)