solar max
An Early Start for Noctilucent Clouds
The season for noctilucent "night-shining" clouds is arriving in the northern hemisphere, when wispy, glowing tendrils of high-altitude ice crystals…
11 years ago
How Big Are Sunspots?
[/caption] The short answer? Really big. The long answer? Really, really big. The image above shows sunspot regions in comparison…
13 years ago
Huge Coronal Hole Is Sending Solar Wind Our Way
[/caption] An enormous triangular hole in the Sun's corona was captured earlier today by NASA's Solar Dynamics Observatory, seen above…
13 years ago