Obs. : 2018-02-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.538e+11
Venus      3.538e+11
Earth      3.509e+11
Mars       3.597e+11
Jupiter    3.611e+11
Saturn     3.625e+11
Uranus     3.460e+11
Neptune    3.538e+11
Pluto      3.626e+11