The moon may be 1.3 light-seconds away, but why on earth do we measure distances using time?

Direct download: How_far_is_a_second.mp4
Category:science & medicine -- posted at: 10:39pm EST



-->

Syndication

Categories

Archives

November 2018
S M T W T F S
     
        1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30