How many cubic nanometers are in a cubic parsec?
A parsec is a distance measurement used in astronomy, defined as the distance at which one astronomical unit subtends an angle of one arcsecond. It's equal to
To convert kilometres (km) to nanometres (nm), we need to know that we move the decimal 3 places to the right for km to m, then another 9 for m to nm, so we're moving 12 in all:
But we want cubic, so we cube this number to get (google couldn't deal with all the digits, so I got an approximation of):
#"3.37394104e76 nm"^3#, which is
#337394104000000000000000000000000000000000000000000000# #"0000000000000000000000 nm"^3#
I'll let the reader put in the commas.
Fun Fact - this number, the number of cubic nanometres in a cubic parsec, is approaching the number of elementary particles in the universe, currently theorized at