This was just an exploratory craft. I dread to think what damage we will do once we plant our cancerous existence on neighbouring planets.
“Nasa’s Messenger mission to Mercury has reached its explosive conclusion, after 10 years in space and four in orbit.
Now fully out of fuel, the spacecraft smashed into a region near Mercury’s north pole, out of sight from Earth, at about 20:00 GMT on Thursday.
According to calculations, the 513kg, three-metre craft blasted a brand new crater the size of a tennis court.”
(Mercury mission ends with a bang http://www.bbc.co.uk/news/science-environment-32542646)