A Sense Of Scale

[Zacs-Master]

A million seconds is 11.5 days
A billion seconds is 31 years.

If you could drive vertically, space would only be about an hour away at the national speed limit.

[Old_Geezer]

If we do not know the full size of the universe can we be sure how many stars there really are ? Maybe we can estimate how many are visible, but beyond the horizon all bets are off.

Sand grains on a planet have to be finite in number though.

[RATTER15]

//Sand grains on a planet have to be finite in number though.// Not really OG, more sand is being created every second, new rock is being generated etc etc.

[Zacs-Master]

Wow. Glad it kept you night owls amused. A thread which didn't descend into an argument. Now there's a rarity!

[anaxcrosswords]

One I found yesterday, back on the subject of space:
In the period of time from when it was discovered to when it lost its status as a planet, Pluto did not complete an orbit of the sun.

[Old_Geezer]

Grains of sand can not be infinitely small, the Earth is not infinitely large. So the number of grains still can not be infinitely large.

[janbee]

Imagine the comments from the kids... are we there yet?