NASA Can't Stop Asteroid Even With 6 Month Notice, Yet

According to NASA, if a giant asteroid was on a collision course with Earth, we'd all be pretty much done for.

The agency just completed a weeklong simulation looking at various scenarios - and concluded that we wouldn't be able to stop an asteroid using current technology - even with six months of advance notice. Evacuating the impact area would be our only option - and NASA says governments are "dreadfully unprepared" for such a scenario.

However, the agency is working on new technology called DART - Double Asteroid Redirection Test - that could potentially redirect an asteroid's orbit to prevent a threat to Earth.