What astounds me to no end is how biological life kept adapting and changing and becoming more complex to bring us to where we are now. Spores to humans. Mind blown.

Gravity

I think what I call the "mimic particles". Two particles (I forget whether the theory says it's subatomic or molecular.), no matter how far apart mimic each other in every movement/behavior. Light is the fastest thing we know, yet these particles, as the theory goes, INSTANTANEOUSLY copy the other's behavior even if they are separated by billions of light-years.

Self-awareness, I think.

That after all I did in my youth... I declined so much and maybe that is why I am still around. Moderation will keep you around. "Little Man Thoughts About his Own Universe".

We are alive and our atoms come from those stars. Tyson said it good. That's cool!

That I am here as the result of innumerable cosmic interactions and chemical and biological events over billions of years any one of which might have denied my chance at existence and the fact that I can flatter myself thinking I have enough understanding and self-awareness to attempt to answer this question.

@orion YES, you've solved the issue of instantaneous communication! It is suspected that worm holes may be responsible for quantum entanglement so if we could just tap that resource...

The Russians drilled a hole 12km down into the earth before the rig broke. They found fossils at the 6km level !

I also like the existence of conscience and also to add to what Tyson said Dr. Lawrence Krauss has stated that: "90% of the mass in your body comes from empty space."

that everything is held together with magnetism

That we, as a species, haven't killed ourselves off yet

THIS! All of this. So much this...

Quantum indeterminacy. Putting the 'free' in 'free will'.

That people can be so ignorant.

Thanks Victoria; I had to think about this (your always making me think). Sitting so long at this site is not only making my butt bigger but my head as well.

I find many things astounding and find more all the time. Tyson is an astrophysicist and, yes the universe is astounding. Imagine if there existed multi-verses! That would be even more astounding. If one were, say, a biologist one would find life and some aspects of life astounding. Ever hear of a siphonophore? There are a lot of astounding things in the universe and even here on Earth.
[en.wikipedia.org]

I can’t top Tyson’s answer

I think that the REALLY big implication of what NDGT has to say is that the heaviest elements (eg, the gold in a wedding ring) was formed in the very moment of the death of a star.

The most astounding fact is that ya'll ain't as crazy as I am. Well, most of you. Some of you?

The collective knowledge about the earth is 99percent unknown and love is the glue.

Pet pev is most people spend most of their waking lives, not liking what they do. Most wasteful time that I can imagine.

that you CANT fix stupid, you can lead a horse to water but CANT make him drink, you can serve/offer good solid sound advice to someone, but if they don't take it, then its pointless in trying to help (stupid) people