4 ms·
A light year is 9.46×10^¹⁵m. I think rounding that to 10¹⁶m (ten petameter) is fine for armchair astronomers. ‘Real’ astronomers like to use the parsec, too (a
by Someone 3y ago
A light year is 9.46×10^¹⁵m. I think rounding that to 10¹⁶m (ten petameter) is fine for armchair astronomers.
‘Real’ astronomers like to use the parsec, too (about 4.2 light years, IIRC)