Sun

NASA said the flares may suggest the sun is emerging from the solar minimum and entering its next cycle.

The base of what will be the world's biggest reactor has been put in position.

Findings could explain why Earth is habitable—or that activity could increase in the future, putting planet at risk.

Observations conducted in the last few days have indicated that the comet may be in trouble on its journey towards our star.

ATLAS is becoming brighter as it approaches the sun because it is being blasted with increasing amounts of radiation from the sun.

The March full moon was the second of four consecutive supermoons this year.

This full moon is the second of four consecutive supermoons in 2020.

The tropical year—or the length of time it takes for the Earth to go from one equinox to the next—is 365 days, 5 hours, 48 minutes and 45 seconds long.

The space rock will fly past our planet at a distance of around 3.6 million miles.

"Supermoon" is a popular term for a full moon occurring when our natural satellite is close to its perigee, or its minimum distance from the Earth.

The annular solar eclipse will pass over parts of Africa, Asia and Australia, but stargazers across the world can watch the event via livestream.

The space rock will sail safely past the Earth at around 26,000 miles per hour—roughly 30 times faster than the speed of sound.

The full moon in December has traditionally been referred to as the "Full Cold Moon" or the "Long Nights Moon."

Solar storms found to "profoundly modify" the foreshock—the region that extends beyond the magnetic field.

2019 TA7 is classified as a near-Earth object because its orbit around the sun takes it within 121 million miles of the star, and 30 million miles of Earth.

Scientists predict current solar cycle will come to an end in the first six months of 2020.

Eclipses such as 2019's event in South America give a highly-detailed snapshot of the solar atmosphere.

The infant was discovered in the vehicle nearly five hours after other children were offloaded at daycare.

The last time that a full moon and the spring equinox fell on the same day was March 20, 1981.

The jets were recorded coming from sunspots—temporary regions on the Sun with reduced surface temperatures.

The skin is our largest organ, and yet many of us are unsure how to care for it.

Scientists in China say harnessing solar power in space will provide an "inexhaustible source of clean energy."

Plasma—which reaches temperatures of hundreds of millions of degrees—is unstable, making it difficult to control.

Earth reached perihelion, the point at which the sun is closest to Earth, at 2:19 a.m. ET on January 3.

Today's Google Doodle features a winter-themed animation.

The prominence was about 10 times the diameter of Earth.

Here's what's in the forecast across the country.

The searing hot ball of gas at the heart of our planetary neighborhood is home to almost all the mass of the solar system—but it's getting lighter all the time.

Polarity changes can occur within centuries, not just over millennia.

In two weeks, the comet will travel closer to the Sun than Mercury.