What was it like to see the comet NEOWISE?

I only heard about comet NEOWISE after it dissapeared and I'm wondering what it looked like? I can see pictures of it online, but I don't think they can possible capture exact how it must have felt to witness such a beautfiul sight. Can anyone tell me what it was like beyond just the visual?...

Has there ever been an asteroid made out of gold or precious gems?

What sorts of things are asteroids usually made of, and has anyone ever found anything valuable or interesting in them?...

How often does the planet Earth have a "close call" with a giant asteroid?

Countless movies have been made about the end of the Earth. We all know the history of dinosaurs. I'm wondering how often we get close to a catastrophic/apocalyptic meteor/asteroid event?   ...