Seeing sunspots during the solar eclipse on October 14

If you're using safe filters during the annular or partial solar eclipse on October 14, 2023, look for sunspots around the disk of the dark moon.

Biggest solar superstorm yet, glimpsed in ancient tree rings

Researchers analyzing tree rings discovered the biggest solar superstorm known so far. If it hit today, it would wreck some critical human infrastructure.

Do solar eclipses affect Earth’s atmosphere?

Hear from a ham radio operator about how solar eclipses temporarily affect Earth's upper atmosphere, or ionosphere. Eclipses can disrupt radio signals and GPS in the region where the eclipse is passing.

Sun activity archive for October 2023

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

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.