Did you hear, the US landed a Mars rover named Curiosity in Gale Crater on Planet Mars last night. The total cost of the project is about US$2.5 billion.....such a deal....cheap at double the price.
When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not work in zero gravity.
To combat the problem, NASA scientists spent a decade and $12 billion to develop a pen that writes in zero gravity, upside down, underwater, on almost any surface including glass and at temperatures ranging from below freezing to 300 C.
