Obs. : 2018-08-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.507e+11
Venus      3.491e+11
Earth      3.479e+11
Mars       3.458e+11
Jupiter    3.477e+11
Saturn     3.427e+11
Uranus     3.586e+11
Neptune    3.491e+11
Pluto      3.467e+11