when the sun always radiates light why isn’t it shining around the sun like a globe making it looking actually bigger than it is?
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In order for light to shine around a light source when we look at it, there needs to be something there for the light to bounce off of. There’s not really a lot of that around the sun, so the only light we see from it (until it hits our atmosphere and starts bouncing around or hits something else to bounce off of, like the moon) is generally the light that’s coming more or less straight from the sun to us.
That said, there *is* some stuff around the sun, just not enough for the light bouncing off of it to usually be noticeable. The corona is partly light bouncing off of stuff (and some is glowing stuff, specifically plasma). Because of how bright the light coming directly from the sun is, though, the corona is pretty much completely overwhelmed. It can be seen with special instruments and during a total eclipse, but otherwise it’s just not bright enough next to the massive light source it surrounds.
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