Nearly four kilometres beneath the East Antarctic ice sheet, Lake Vostok sits in darkness under enough ice to hide one of the ...

A newly declassified video shown in infrared, depicts an object appearing to be a weather balloon shot down – moments before a bright white object appears to the right of the crosshairs.

A gentle breeze on Earth barely wrinkles a lake. But on Titan, Saturn’s largest moon, that same gust of wind could raise waves as tall as a two-story building. That strange mismatch is the focus of a ...