Two NASA spacecraft have begun a new mission, switching their focus from the Earth to the moon.
See our amazing collection of stories and features about the increasingly important topic of space weather (aka solar storms).
The mystery behind the faint glow of light in Earth's upper atmosphere, known as the diffuse aurora, has been found, scientists say.
NASA has approved a new mission to Mars that will investigate how the Red Planet has lost its atmosphere over the years.
The edge of our solar system is a much more dynamic place than previously thought, new research suggests.
NASA will gather scientists together Wednesday (Sept. 29) to announce new findings about the edge of our solar system from a spacecraft gazing at the region from its orbit around Earth.
Lightning on Venus and Earth may spark in much the same way despite vast differences in the atmospheres of the two planets, scientists say.
Two NASA satellites peering at the sun have snapped photos of Mercury's long, comet-like tail, and it took an interested amateur to bring the pictures to light.
When storms of charged particles rage on the sun, they don't always travel in a straight line, a new study finds.
The luminous auroras of Earth's northern lights show may get a boost Monday from a weekend solar eruption.
NASA is developing a mission to plunge a car-sized probe directly into the sun's atmosphere, exploring a region no spacecraft has ever visited.
The IBEX spacecraft has taken unprecedented images of the solar wind crashing into Earth's protective magnetosphere.