26. IMPACT on COMET TEMPEL.1

It is really possible to approach a comet, touching him and even analyse its inner part. This is done in 2005, by sending a spacecraft, which shoot a probe to the comet and measured the dustcloud after impact. The size of he comet is 14 x 4 km, the distance: 130x 10^6 km and it took roughly 5 months to arrive there.