Asteroid on a collision course with Earth? These astronomers will likely see it first. NASA's Center for Near-Earth Object Studies - now entering its 3rd decade - makes over 90 percent of near-Earth asteroid and comet discoveries. Here's how and why they do their work.
In the wake of hurricanes Irma and Maria, researchers document how catastrophic storms can be agents of natural selection, influencing how species evolve.
Red Mars, red moon. Yadi Suryadi in West Java, Indonesia, wrote: "The moon became red when it began to reach the peak of the total lunar eclipse (right), and the red planet Mars around its opposition (left)."
