plasma is a loose term which really means it's highly charged particles. They will tell you it's mostly hydrogen and helium. It's like saying earth is mostly made of hydrogen if you left out the soil.
The sun nor the earth can hold up it's atmosphere without dense object at it's base.
This might seem like a minor point given that it is true. Nearly everything about astronomy and nuclear physics is wrong.
Chondrite meteors are only found from our sun. They're negatively charged meteors when they hit our positively charged atmosphere they always blow up on entry. Which means they came from the surface of the sun which is negatively charged. Other meteors have no charge or are positively charged.
Another odd thing about Chondrite meteors they're the only meteor with amino acids on them.
https://en.wikipedia.org/wiki/Chondrite