Gigantic hidden fortresses discovered 1,800 miles underground in Earth's mantle, rewrite how the planet's interior works.

A team of astronomers has uncovered an unexpectedly complex and dynamic filamentary network within a very-high-velocity cloud ...

For more than 40 years, the Department of Defense has operated satellites that collect information about atmospheric and ...

A new space device called GIRO could transform how we study planets and other celestial bodies. Compact and precise, this ...