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.

C. Alex Young

Raúl Cortés

Armando Caussade

Michael Maimone

February 28, 2023

Sun

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

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?

C. Alex Young

January 21, 2023

Sun

Sun activity archive for October 2022

Bottom line: Sun activity archive for October 2022. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.

October 31, 2022

Limb darkening is an optical effect on the sun

Limb darkening is an effect we can see on the sun where the edges of the sun are darker than the center, due to the amount of photosphere we're looking at.

C. Alex Young

Kelly Kizer Whitt

August 1, 2022

Sun

Why are east and west on the sun reversed?

East and west on the sun are opposite from what you might expect. On the sun, east is to the left and west is to the right. Learn why here.

C. Alex Young

Raúl Cortés

May 3, 2022

A Grand Solar Minimum? Or a normal sun?

A Grand Solar Minimum happens when the peaks of several solar cycles in a row show less than average intensity. Are we in one?

C. Alex Young

May 2, 2022

C. Alex Young

C. Alex Young is a solar astrophysicist studying the Sun and space weather. Alex is passionate about sharing science with diverse audiences. This led him to start The Sun Today with his designer wife, Linda. First through Facebook and Twitter then adding an extensive website thesuntoday.org, the two work together to engage the public about the Sun and its role in our solar system. Alex led national engagement efforts for the 2017 total solar eclipse. He is the Associate Director for Science in the Heliophysics Science Division at NASA Goddard Space Flight Center.