A sun pillar, or light pillar, is a shaft of light from the sun or other bright light source, caused by ice crystals under the right atmospheric conditions.
X flares on the sun are the most powerful explosions in the solar system. We're likely to see more of them as we approach solar maximum, due around 2025.
A giant sunspot - AR 3190 - is crossing the face of the sun this week. It'lll soon disappear, but is still visible as of January 21, 2023. What makes it?
The active sun is frequently in the news as Solar Cycle 25 ramps up. Here's a handy sun glossary so you can get up to speed on all the solar terms you'll see.
An aurora season occurs in October and March each year, due to the way the magnetic fields of the sun and the Earth work in conjunction with sun-Earth geometry.