This is totally unbelievable.......

...and yet, of course, it isn't, because we did it!

But still, am totally discombobulated.
(Ha, bet you didn't know I knew that word!)

Swarm of pebbles could safely deflect asteroids

FLINGING pebbles at an asteroid sounds like a fruitless task,
but a new calculation shows that  this could deflect an
Earthbound rock.

• New Scientist
• 05 May 2012
• Magazine issue 2863