Obs. : 2018-11-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.434e+11
Venus      3.394e+11
Earth      3.499e+11
Mars       3.539e+11
Jupiter    3.457e+11
Saturn     3.518e+11
Uranus     3.518e+11
Neptune    3.530e+11
Pluto      3.561e+11