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.
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
Sun activity archive for March 2023
Sun activity archive for March 2023. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
March 31, 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
Sun activity archive for February 2023
Bottom line: Sun activity archive for February 2023. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
February 28, 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
