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Sun activity: The big sunspot region is getting bigger
Sun activity for May 29, 2023, is low. You can still see AR3315. It's even bigger now! And several possible regions could soon rotate into view.
May 29, 2023
Space weather effects on Earth: Top 5 questions
NASA answers questions about space weather, from what does it do to Earth and how is it monitored to how can we prepare for a solar storm.
May 23, 2023
Did an active sun kickstart life on Earth?
In the early days of Earth, a more active sun showered particles onto our atmosphere, which could have created the building blocks of proteins and organic life.
May 11, 2023
What are coronal mass ejections? Strong eruptions on the sun
Coronal mass ejections (CMEs) are powerful eruptions on the sun that can disrupt electrical systems and produce brilliant auroral displays on Earth.
April 24, 2023
Hybrid solar eclipse photos: April 20, 2023
Enjoy these April 20, 2023, hybrid solar eclipse photos from the EarthSky community. Do you have a photo? Share it with us!
April 20, 2023
A geomagnetic storm is caused by activity on the sun
A geomagnetic storm is a disturbance in Earth's magnetic field, caused by activity on the sun. The current solar cycle number 25 has triggered a few of them.
April 19, 2023
April 2023 solar eclipse: 10 things to know
Find out where and when to see the April 2023 solar eclipse, plus some fascinating facts about it. Plus, get a link to a livestream of the event.
April 9, 2023
What is a hybrid eclipse? A total and annular combined
A hybrid eclipse is a solar eclipse that appears as total for some and annular for others, with those farther from the centerline seeing a partial eclipse.
April 9, 2023
Is a solar flare the same thing as a CME?
Solar Cycle 25 is fairly active now, and that means more solar activity. So, what's the difference between a solar flare and a coronal mass ejection (CME)?
March 22, 2023
What is a sun pillar, or light pillar? They’re beautiful!
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.
March 15, 2023
