A NASA mission to study the heliosphere—the sun's magnetic bubble that shields our solar system—and develop a better ...

The methane gas may constitute a rarefied atmosphere, or it may come from erupting plumes on Makemake’s surface.

Germany has committed billions to beefing up its military’s equipment after years of neglect. Now it is trying to persuade ...

Tamir Rice was killed at age 12 by a Cleveland police officer. His mother is determined to create a legacy that will honor ...