A soldier’s most important weapon may wind up being a walkie-talkie-style radio or backpack satellite terminals, Fraser says. Mobile and Wi-Fi networks can become ‘overwhelmed’ in wartime, meaning ...

The bombing has quieted in Iran’s 12-day conflict with Israel. Now its battered theocracy and 86-year-old Supreme Leader ...

All events are Tucson times. Schedule subject to change and/or blackouts.

X1.9-class solar flare triggers blackout across Pacific communication No coronal mass ejection seen, so aurora activity remains unlikely Region 4114 shows repeated flaring, indicating high solar activ ...

Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth’s atmosphere to ...

A powerful X-class solar flare erupted on June 19, disrupting radio signals and potentially setting the stage for geomagnetic ...

The latest solar flare follows an M-class one, the second-highest on the scale, that occurred days earlier on June 15. It ...

All events are Tucson times. Schedule subject to change and/or blackouts.

ET, sunspot region 4114 released an X.12 class solar flare that caused a radio blackout over the Pacific Ocean, including ...

NASA captured an image of the sun emitting a powerful solar flare that could interfere with technology on Earth.

Sunspot region 4114 has fired off its strongest blast yet — an X1.2-class solar flare that erupted on June 17, triggering ...

Starlink already dims its spacecraft in visible light by tipping solar panels away from Sun reflections. A similar hardware ...