A tiny asteroid explorer that launched on NASA's moon mission last week still hasn't phoned home. Near-Earth Asteroid (NEA) Scout was one of 10 cubesats that hitched a ride to space on NASA's Artemis 1 mission, which launched on Nov. 16. The spacecraft was designed to sail on sunlight to fly past a small asteroid dubbed 2020 GE about a year from now. NEA Scout personnel are hoping that the spacecraft's unusual propulsion strategy could help them track down the cubesat. Packed into the small satellite was a reflective, silvery solar sail that unfolds to 924 square feet (86 square...