Gravitational assists are an emblematic example of why space travel is hard —it is exactly rocket science, after all. Gravity ...

NASA's discoveries reveal water's prevalence beyond Earth, from subsurface oceans on moons to vapor in exoplanet atmospheres.

Recent flybys of the fiery world refute a leading theory of its inner structure—and reveal how little is understood about ...

Use precise geolocation data. Actively scan device characteristics for identification. Store and/or access information on a device. Personalised advertising and content, advertising and content ...

The Sun sends out a constant flow of charged particles called the solar wind, which ultimately travels past all the planets ...