SPHEREx first analyzed the interstellar comet in August, when it was between Jupiter and Mars.

A powerful flare unleashed a severe solar storm that caused auroras and GPS disruptions on Earth.

Solar activity is likely to be on the decline all the way to 2030, which will mark the end of Solar Cycle 25.

This year has given stargazers plenty of opportunities to catch the colorful auroras of the northern lights flicker across the night sky, and that's expected to continue as the sun is now in its solar ...

Massive solar flares, graceful eruptions of solar material, and an enormous sunspot make up some of the imagery captured by NASA's Solar Dynamics Observatory in 2013 and 2014. A year ago this weekend, ...

The sun has seen its most active month for over two decades, with a monthly average of 215.5 sunspots being recorded in August. This is the first time the average monthly sunspot number has exceeded ...

Scientists hunting for life beyond Earth have discovered more than 1,800 planets outside our solar system, or exoplanets, in recent years, but so far, no one has been able to confirm an exomoon. Now, ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The largest comet ever found has jets of carbon monoxide gas ...

The Sun's activity is what gives us beautiful auroras — but it also has dramatic negative effects on satellites that go around Earth in a low orbit. When you purchase through links on our site, we may ...

New models suggest that Europa has very little tectonic activity at its seafloor, which is potentially catastrophic news for ...

"I believe that this is probably one of the most detailed solar time lapses ever made by an independent astrophotographer." When you purchase through links on our site, we may earn an affiliate ...

(PhysOrg.com) -- New photographs of the gas giant Jupiter, the first taken on May 9, show the massive reddish band of clouds known as the Southern Equatorial Belt in the planet’s southern hemisphere ...