Obs. : 2018-09-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.749e+11
Venus      3.752e+11
Earth      3.767e+11
Mars       3.796e+11
Jupiter    3.794e+11
Saturn     3.775e+11
Uranus     3.780e+11
Neptune    3.787e+11
Pluto      3.783e+11