People in the northernmost states may have a chance to see auroras glowing in the northern sky tonight.

Before dawn the next day enormous auroral displays of red, green, and purple illuminated the ... Neither solid, liquid, nor gas, the sun is made up of plasma, the “fourth state of matter ...

Stellar-mass and supermassive black hole coronas have some similarities, and this is great news for black hole physicists.

Coronal mass ejections are just blasts of plasma from the sun,” Jung explained ... Oxygen makes red colors. Purple and deep blues are from hydrogen and helium. Dark red is from nitrogen.

A geomagnetic storm supercharged Earth's auroras, or the northern lights overnight on Thursday (Oct. 10), with aurora watchers in the U.S. and across the globe on hand to capture the stunning ...

After a massive solar flare erupted this week, NOAA issued a view-line map of the US, including more states with increased ...

The sun erupted with an X-class solar flare on Halloween, and solar activity is expected to remain high through Nov. 3.

Solar storms can disrupt GPS and air travel, and cause blackouts. Get one big enough, experts warn, and it could be a ...

NASA's IXPE mission has provided new insights into black holes' coronae, revealing their shape and enhancing our understanding of their structure. This data, derived from the observation of both ...

"The aurora may become visible over much of the northern half of the country, and maybe as far south as Alabama to northern California," NOAA predicted.

NASA recently announced that as of late October, the Sun has reached solar maximum: a repeating crescendo of solar activity that often comes with increased solar flares. True to form, it seems like ...

The extreme qualities of neutron stars could mean these dead stellar remnants gather dense clouds of hypothetical particles ...