Students had questions. The answers came from an astronaut in the International Space Station in an out of this world school ...

Russia is extensively testing a new plasma based rocket engine that will use charged hydrogen particles to gain turbulent ...

The above image shows a 20-meter-long chunk of frozen carbon dioxide falling off a cliff. Rising temperatures during the ...

A recent video created from images captured by Curiosity shows clouds tinted red and green flowing though the sky over Mars.

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

The development of the engine is expected to make interplanetary trips much faster and expand humanity's access to worlds ...

Everyone knows that Earth is capable of providing beautiful, snowy landscapes, but it isn't unique in that. It snows on Mars, ...

The US wants to put a flag on Mars. But there’s a risk it could carry unwanted stowaways that might compromise future ...

Nobody in space can hear you scream… with laughter, but they might after you've watched these sci-fi comedies.

NASA researchers have identified geological structures on Mars that are unlike anything found on Earth. From spider-like ...

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may ...

Five of the brightest planets Mercury, Venus, Mars, Jupiter, and Saturn, can be seen even from urban areas with mild ...