I think the really cool and compelling thing about math and physics is that it opens up entry to all these hypotheticals - or at least, it gives you the language to talk about them. But at the same time, if a scenario is completely disconnected from reality, it's not all that interesting.
Randall MunroeSpace is about 100 kilometers away. Thatโs far awayโI wouldnโt want to climb a ladder to get thereโbut it isnโt that far away. If youโre in Sacramento, Seattle, Canberra, Kolkata, Hyderabad, Phnom Penh, Cairo, Beijing, central Japan, central Sri Lanka, or Portland, space is closer than the sea.
Randall Munroe