The atmosphere itself is… not so fine. It's mostly carbon dioxide, which hey, it's what plants crave, but also a lot of ...

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 ...

Ever wonder how NASA captures stunning images from deep space probes? Interplanetary scientist John Spencer takes us behind ...

Under such scenarios, Mercury frequently crashes into the Sun or Venus, setting off cascading changes that alter the orbits ...

How can fission-powered propulsion help advance deep space exploration, specifically to the outer planets like Jupiter, ...

Now three months past its conjunction with the sun in March, Saturn is currently well separated from the dawn glow. On June 1 ...

Jupiter joins Mercury in early twilight as Mars lingers with Leo after dark. Saturn is visible in the morning, meeting ...

Strauss' "Blue Danube" is heading into space this month to mark the 200th anniversary of the waltz king's birth.

Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a highly ...