Comet Temple 1 is about to slam into Nasa's Deep Impact robotic washing machine sized copper slug on the 4th of July. Hopefully, the fireworks will be spectacular. Now you can watch the collusion happen live via webcast. The Deep Impact spacecraft has two parts. One that sits back and films the event and a second that is released to collide with the comet and hopefully cause a crater and ejecta. Basically, the scientists want to see what's inside a comet at it's juicy center. Supposedly there's no chance this will cause any life ending debris to fall to earth, but you never know! For now you can see an artists animation of what Scientists expect to happen.