The work of the Department of Health and Human Services affects every American in many ways. Overview of the organization, ...

Known as Sgr A* – pronounced “Sagittarius A star” – the supermassive black hole is four million times the mass of the sun and is known to exhibit flares that can be observed in multiple wavelengths, ...

Sunspot AR3256 erupted with an X1.2-class solar flare. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

Solar material is gusting out of the dark patch in the Sun's corona towards Earth at more than a million miles per hour.

According to the monitoring data, following the flare, the level of impact of solar X-ray bursts on the Earth's ionosphere increased to the R1 (weak) level, on a five-point scale topping out at R5, or ...

The owner of the McMath-Hulbert Observatory in Lake Angelus says he never intended to own it this long, but now he is trying ...

Images captured by NASA's Solar Dynamics Observatory have revealed that "coronal loops" give off subtle flashes of ...

The sun showed a witchier face in 2024. Since 2020, its dark, warty sunspots have increased in number from fewer than one per ...

Another display of the northern lights could be visible this weekend in several U.S. states following a severe solar storm.

The colorful northern lights may reveal themselves to South Dakotans Friday night due to an impending solar storm forecast to ...

The aurora borealis is back and is expected to be visible in more than 10 states. See which states will have the best views.