I read a few of these figures in a book I’m into right now, and I figured I’d expand on the math a bit and put it into visual terms…
It takes the sun 226 million years to orbit the Milky Way galaxy, a trip that it (along with our whole solar system) has made about 20 times since the sun ‘turned on.’
If you imagine the galaxy like a giant clock, 100k light years across, if we’re at 6 o’clock, it would take 113 million years to tick-tock through 6 hours on that clock to noon. Noon being 100k light years away, if we could ‘look’ straight through to the other side.
If you allow a generous estimate that humans we know them were first seen on earth about 150,000 years ago, we’ve only been a part of about 28 seconds of one lap around that giant galaxy-as-a-clock thing.
The sun has been around that clock 20 times, 10 days worth of ‘imaginary clock’ time, and we as humans haven’t even seen a full 30 seconds. We…are pretty small.