Obs. : 2018-07-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.438e+11
Venus      3.452e+11
Earth      3.352e+11
Mars       3.285e+11
Jupiter    3.478e+11
Saturn     3.320e+11
Uranus     3.257e+11
Neptune    3.195e+11
Pluto      3.301e+11