CAPE CANAVERAL, Fla. (AP) - A NASA spacecraft is just a few hours away from landing on Mars.
The InSight lander is aiming for a Monday afternoon touchdown on what scientists and engineers hope will be a flat plain.
Everyone involved in the $1 billion international mission is understandably nervous. They say they've had trouble sleeping, and their stomachs are churning.
It's risky business to descend through the Martian atmosphere and land, even for the U.S., the only country to pull it off. It would be NASA's eighth landing on Mars.