Science News

China's robotic Chang'e 4 spacecraft launched from Xichang Satellite Launch Center Dec. 7, kicking off the first-ever surface mission to the moon's far side.

Snack-loving scientists working with the Opportunity mission on Mars dubbed tiny, iron-rich spheres scattered near the robot's landing site "blueberries," but these features were easier to name than to understand.

Physicists and others confront science’s limits --