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It's atmosphereThe surface
It's the solar corona – it's atmosphere – that's the hottest, weirdly. Scientists don't 100% know why.
13 million1.3 million
If you don't melt them, it'd be just under one million, with all the gaps between the Earths.
A few seconds.Thousands of years.
This paper puts it at 170,000 years for the average photon to escape the sun.
Basically, Earth and all the other planets are insignificant next to it.
Galileo GalileiIsaac Newton
He did it in 1612!
That's why they look dark.
4.5 billion years ago6.5 billion years ago
It formed along with the solar system around 4.5 billion years ago.
1 billion years4.5 billion years
When it's around 7 billion years old, the sun's going to start expanding. When it reaches around 10 billion years old it'll have become a red giant whose atmosphere will reach almost as far as where Earth is right now. Eek.
Core, Convection Zone, Radiative Zone .Core, Radiative Zone, Convection Zone.
This NASA diagram reveals all.
Transition Region, Photosphere, Chromosphere, Corona.Photosphere, Chromosphere, Transition Region, Corona.
Check this NASA diagram again for the outer layers too.
27 days72 days
Although the equator rotates faster than the poles, on average the sun rotates roughly once every 27 days.
That's 2 x 1024 kg.
A G-type main sequence starA K-type main sequence star
It's a G – which means it had a temperature of around 6000 Kelvin.
The Hardest Quiz About The Sun You'll Take Today
Wow, you either really know your stuff or are good at guessing. Well done!
You know some stuff about the sun! Not, like, everything, but that's fine, because nobody expects you to know everything.
That wasn't great. You would have probably done better if you just guessed at random – maybe try that next time.
The sun's atmosphere is hotter than its surface. An earlier version of this quiz said that the sun's atmosphere was hotter than its core, which it clearly is not. You can all add one point to your scores, sorry!