A multi-year investigation revealed errors in our understanding of the Sun.
Want to see a star rock in real time? Observe the Sun in the crimson light of hydrogen alpha and watch it come alive.
Fascinating faculae provide a way for anyone with a small telescope to track the ups and downs of the solar cycle — even when there are no sunspots.
Learn how to see the solar disk worry-free, whether it's during an eclipse or on an ordinary sunny day.
When it comes to observing the Sun, remember safety first!
Before an eclipse occurs the media often provides information on how to watch the event safely. Unfortunately, despite the best intentions, inaccurate or confusing information on safe observing techniques is often provided. Here are the facts.
Looking for a daytime astronomy project to pursue? Why not set your sights on our nearest star?
If I can see solar prominences with the naked eye during a total eclipse, why do I need a hydrogen-alpha filter to see them at other times? During a total eclipse the Moon completely blocks the Sun’s photosphere, or visible “surface,” allowing prominences (and the corona) to shine in all their glory. Without the...
With modest equipment and attention to safety, you can enjoy observational astronomy throughout the day.
The surface of the Sun is a dynamic, living place that can change unpredictably from day to day.