Space/Science — HabitableZone

Space/Science » in reply to That was 13.73 Billion years ago!

re: That was 13.73 Billion years ago!

Ahh, but the key word is 'expansion' and then there's the momentum/travel part that has to be taken into account... i.e., the Earth, solar system AND Milky Way have traveled far and wide in those 13.73 Billion years.

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