Landing the Rosetta spacecraft on a speeding comet is a pretty extraordinary thing. Rosetta has been traveling for 10 years. Who figures this stuff out, getting Rosetta and the comet in the same place at the same time?
Rosetta cost $1.4 billion. The website Vox points out that that is less than half of what was spent on the midterm election. It’s just a little bit more than the cost of the Dallas Cowboys stadium.
India sent a craft on a 10-month, 420 million mile journey, which put it in orbit around Mars. The cost: $750 million. By comparison, the movie “Gravity” cost $100 million.