You can think of NASA’s Discovery program as a sort of outer-space American Idol: every few years the agency invites scientists to propose unmanned planetary missions. The projects have to address some sort of fundamental science question, and they have to be relatively cheap to pull off — say, half a billion dollars or so
Tag Archives: planetary
Jupiter’s stormy Great Red Spot is shrinking
Everything about Jupiter is super-sized, including its colorful, turbulent atmosphere.