The powerful X1.1 solar flare from sunspot region 4298 sparked strong radio blackouts on the sunlit portion of Earth at the ...

A powerful X1.9 solar flare from new sunspot AR4299 triggered strong radio blackouts, as giant sunspot AR4294 rotates into ...

A sprawling and highly active sunspot complex is turning toward Earth just as a recent solar eruption sends a glancing blow ...

The Sun has just delivered one of its most forceful reminders that space weather is not an abstract concept but a real-world ...

Solar flares and other activity can disrupt radio communications, power grids and navigation signals, according to NASA.

The Sun fired a staggering X1.9-class solar flare at the turn of the month, triggering a sudden, widespread radio blackout ...

A sunspot, potentially generating multiple solar flares, may lead to auroras that could be visible as far south as Alabama.

Philippine officials say Chinese forces have fired three flares from an artificial island toward a Philippine plane ...

Space weather forecasters have issued a geomagnetic storm watch through Monday, saying an ouburst of plasma from a solar flare could interfere with radio transmissions on Earth. It could also make for ...

Astronomers have performed very long baseline interferometry (VLBI) observations of a gamma-ray loud blazar known as TXS 2013+370. The observations, posted November 19 on the arXiv preprint server, ...

SEOUL – Japan has sent a senior envoy to China to reassure its government that Tokyo's policies have not changed, despite Prime Minister Sanae Takaichi's suggestion that military action by China ...

JOHANNESBURG, South Africa — The world's biggest economy will be conspicuously absent from a meeting of the globe's 20 richest nations this weekend, as the U.S. boycotts the G20 Leaders' Summit hosted ...