The Sun

The vibrant auroras from earlier this year have a darker side that scientists are still uncovering.

The time of the annual summer solstice will be the earliest it's been for centuries and will continue to creep forward every leap year until 2100. But why?

When the sun reaches its period of peak activity, known as solar maximum, our star's magentic field will suddenly reverse. But why does it happen, and will it impact Earth?

An atmospheric phenomenon known as STEVE has a secret twin that appears before the break of dawn and flows in the opposite direction, new research finds.

The Instagram-worthy alignment of the setting sun and the streets of Manhattan is about to begin again. The annual spectacle is caused by New York City's gridiron layout.

New simulations suggest that the origins of the sun's explosive storms could lie much closer to its surface than first thought.

Vibrant auroras that were recently observed by millions of people across the globe were some of the most widespread in the last five centuries, NASA says. The light shows may have also reached the equator.

The strongest solar flare in half a decade just launched off the sun from the same sunspot group that triggered dazzling auroras last weekend. But don't expect northern lights this time around.

Auroras occur when charged solar particles bash into Earth's magnetic field and funnel toward the poles. The types of atoms these particles hit determines the color of light emitted.