Obs. : 2018-12-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.473e+11
Venus      3.422e+11
Earth      3.510e+11
Mars       3.532e+11
Jupiter    3.473e+11
Saturn     3.577e+11
Uranus     3.470e+11
Neptune    3.532e+11
Pluto      3.593e+11