What is the Sun’s corona?
Quick Answer
The Sun’s corona is its outer atmosphere, a faint halo of extremely hot plasma visible during a total solar eclipse. It can be millions of degrees Celsius.
The Full Story
The corona is the outermost layer of the Sun’s atmosphere, extending millions of kilometers into space. Although it is much dimmer than the Sun’s surface, it is far hotter, reaching temperatures of roughly 1 to 3 million degrees Celsius or more in some regions. Scientists still study why the corona is so much hotter than the surface, a problem linked to magnetic fields and wave heating. The corona becomes visible to the naked eye only during a total solar eclipse or with specialized instruments called coronagraphs.
Key Facts
YouTube Angle
Suggested video title for this topic:
"Why the Sun’s outer atmosphere is hotter than its surface"
Was this answer helpful?
Tap a reaction — it helps us pick what to cover next.