Brief Astronomy and Other Notes

The age of the universe is 13.77 billion years +/- 59 million years.
The current observable size of the universe is about 92 billion light years.

1 light year, light traveling 286,000 miles per second, over one year equals roughly 6 trillion miles.

There are an estimated 10 trillion galaxies in the universe with an estimated 100 billion stars each --
100 octillion stars or 100,000,000,000,000,000,000,000,000,000 stars

The Earth is 4.55 billion years old.

Anatomically modern humans evolved from archaic humans in the Middle Paleolithic, about 200,000 years ago. > Black Book > Astronomical Notes