Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Sun activity: Seeing a solar eclipse from space
Sun activity for March 22, 2023: GOES-16 captured a partial solar eclipse from space earlier today. We might have a moderate geomagnetic storm on March 24.
March 22, 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
What are X flares? Can they harm us?
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.
March 1, 2023
Sun activity archive for February 2023
Sun activity archive for February 2023. A daily record of our local star, as it edges toward the peak of Solar Cycle 25, expected in mid-decade.
February 28, 2023
Annular solar eclipse of October 14, 2023
Heads up! The October 14, 2023, annular solar eclipse will cross the US, Mexico, Central America, Colombia and Brazil. Maps and more here.
February 22, 2023
Comet Machholz rounds the sun, drops fragments
Comet Machholz made its closest approach to the sun on January 31, 2023. It left behind tiny fragments. Read more about this unusual comet.
January 31, 2023
Sun activity archive for January 2023
Sun activity archive for January 2023. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
January 31, 2023
Flashes on the sun might help predict solar flares
Using data from NASA’s Solar Dynamics Observatory, scientists have found that flashes on the sun could help them predict the next solar flare.
January 22, 2023
What makes a giant sunspot?
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?
January 21, 2023
