By Douglas Holtz-Eakin
The young drop coverage to avoid higher premiums
NASA's robotic rover Curiosity is making its mark on Mars, in a way so big that it can be seen from space.
Fascinated by NASA's latest Mars mission and planning to tune in?
Other rovers have left tracks on Mars, but not as deep or wide as Curiosity's, Watkins said.
At the end of that arm is a "Swiss Army knife" of scientific instruments designed to test rocks and the chemicals in the soil, Watkins said.
