Sun activity is moderate, with an almost-X flare

Sun activity for September 21, 2023, is moderate with an M8 flare. Earth's geomagnetic field has quietened down, but may become active over the next day.

Annular solar eclipse of October 14, 2023

Now just a month away! The October 14, 2023 annular solar eclipse will cross the US, Mexico, Central America, Colombia and Brazil. Maps and more here.

How to photograph a solar eclipse, with Alan Dyer

Get tips on how to photograph a solar eclipse with author and astrophotographer Alan Dyer. Use these tips for the October 14, 2023, annular eclipse as well!

Sun activity archive for September 2023

Sun activity archive for September 2023. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.

Sun activity archive for August 2023

Sun activity archive for August 2023. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.

Neptune’s clouds linked to sun’s 11-year cycle

Years worth of images of the 8th planet from the sun show that Neptune's clouds are synced with the sun's 11-year cycle. Read the weather forecast for Neptune.

Sun causing global warming? 2 reasons why not

Is the sun causing global warming? A solar physicist with NASA says no. Read the quick-and-easy-to-understand explanation here.

Q&A: What is the sun’s role in climate change?

The sun influences the Earth's climate, but what is the sun's role in climate change? According to NASA, it's not likely the cause for climate change.

Solar Cycle 25 is more active and powerful than predicted

So far this solar cycle has been more powerful and surprising than predicted. It has been very active so far before the predicted peak in 2025.

This giant solar eruption rocked Earth, moon and Mars

A giant solar eruption from 2021 is teaching scientists how to protect astronauts. The radiation from the event struck Earth, the moon and Mars simultaneously.