Obs. : 2018-12-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.473e+11
Venus      3.446e+11
Earth      3.499e+11
Mars       3.567e+11
Jupiter    3.473e+11
Saturn     3.571e+11
Uranus     3.502e+11
Neptune    3.585e+11
Pluto      3.573e+11