Data collected by NASA's InSight lander suggest that ancient internal processes are responsible for the "Martian dichotomy" ...

The commercial passenger plane that collided with a Black Hawk chopper over the icy Potomac River in Washington, DC, Wednesday night split in half, according to a report. NBC 4 Washington’s Mark ...

Scientists have been split on whether it resulted from external factors—such as a collision with a huge, moon-sized asteroid—or internal ones, such as the flow of heat through the planet's molten ...