A passing star may be responsible for more than three-fourths of the moons in our solar system as the stellar Traveler flung massive...
On April 23, NASA launched a solar sail protype to orbit around our planet — a piece of technology that could very well revolutionize...
A NASA spacecraft that recently unfurled a state-of-the-art solar sail in Earth orbit is "tumbling or wobbling" through space as it...
The number of black spots peppering the sun's surface in August was the highest for almost 23 years, new data shows. The latest sunspot...
Our Sun drives a constant outward flow of plasma, or ionized gas, called the solar wind, which envelops our solar system. Outside of...
Researchers have produced the world's first flexible "solar panel" that is thin enough to coat on other objects so they can double...
Auroras on Earth occur when storms from our sun engulf our planet — and in a rare cosmic feat last April, our planet returned...
Aurora chasers may be in for a treat once again this weekend as an enormous blob of charged particles barrels toward our planet in...
The active sun is kicking into overdrive and we could be in for yet more dazzling auroras.In the early morning hours of Aug. 14, the...
Space is very, very cold. The baseline temperature of outer space is 2.7 kelvins — minus 454.81 degrees Fahrenheit, or minus...
Three high-speed solar explosions known as coronal mass ejections (CMEs) are set to slam into Earth's magnetic field this weekend,...
Carvings chiseled into a large stone pillar in Turkey nearly 13,000 years ago may be the world's oldest sun-and-moon calendar, a new...
Like a supersonic jet being blasted with high-speed winds, Earth is constantly being bombarded by a stream of charged particles from...
"Half-forgotten" sunspot drawings by Renaissance astronomer Johannes Kepler are showing us more about how the sun's cycle of activities...
Tonight (Aug. 1) may be the last chance for skywatchers in parts of the U.S. to see the northern lights triggered by a powerful "cannibal"...
In a rare double-whammy space assault, the European Space Agency's Gaia spacecraft was recently slammed by a micrometeoroid and struck...
Black holes are massive, mostly invisible and so powerful not even light can escape them. So what would happen if one entered our solar...
If you look up on a clear night, the brightest and largest object in the sky will probably be the moon. And unless you have a decent...
