The outermost layer of the Sun's atmosphere, extending millions of kilometers. Much hotter than the surface at 1-3 million degrees Celsius (the coronal heating problem). Visible during total solar eclipses as a pearly white halo.
A sudden, intense burst of electromagnetic radiation from the Sun near sunspots. Releases energy equivalent to millions ...
A continuous stream of charged particles from the Sun's corona at 300-800 km/s. It shapes planetary magnetospheres, driv...
An astronomical event when one celestial body moves into the shadow of another. Solar eclipses occur when the Moon passe...
Dive deeper into solar corona and related concepts on Cosmos Observatory.