page.section.full_url = {{ page.section.full_url or home }}
Filaments are cooler and often unstable clouds of particles floating above the Sun’s surface, which are tethered by magnetic forces. In extreme ultraviolet light, they appear darker than the Sun’s surface. The bright area to the right of the filament is an active region. The loop that appears behind the filament in the middle of the clip is made of charged particles tracing magnetic field lines. Credit: NASA
The Conversation
Don’t miss a thing
What matters in tech, in your inbox daily
Follow us on
Link in profile.

Send a raven.

David Benioff and D.B. Weiss are going from #Westeros to a galaxy far, far away. Click the link in our profile to learn more.