Scientists have detected the most energetic cosmic rays ever discovered, and they're being produced by mysterious sources relatively close to Earth. The rays — which consist of electrons and ...

This intense X2.7-class flare hit the daylight side of Earth with a wave of X-rays and extreme ultraviolet radiation, causing R3-level radio disruptions across Europe, Asia, and the Middle East ...

Scientists Claim the Most Powerful Solar Storm Smashed Into Earth in 12,350 BC, Evidence Found in Ancient Tree Rings When we think of threats from space, asteroids often take the front seat.

The powerful X2.7-class flare hit the daylight side of Earth with a wave of X-rays and extreme ultraviolet radiation, causing R3-level radio disruptions.

Sky-gazers were out in force Wednesday to view the annular solar eclipse. If eclipse fever has set in, here’s what’s in store in the coming years, according to NASA.

The solar flare peaked at 2:40 a.m. EDT (0640 GMT) and caused shortwave radio blackouts over the sunlit portion of Earth at the time of the eruption, Asia and the Indian Ocean.

NEW YORK (AP) — A strong solar storm headed to Earth could produce colorful aurora displays across more U.S. states than usual Tuesday night. The sun earlier this week burped out huge bursts of ...

Earth's atmosphere is much more sensitive to ripples of radiation from the sun than scientists previously believed, new research by Queen's University Belfast has found. Solar flares, which are ...