"We" just landed on a comet hurtling through space
Philae the lander from the Rosetta mission touched down yesterday (several times apparently).
* Travelled 6.4 billion km (four billion miles) to reach the comet
* Journey took 10 years
* Planning for the journey began 25 years ago
And people ask why we spend so much money!
Well how much does it cost to land on a comet? This much