Obs. : 2018-09-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.319e+11
Venus      3.377e+11
Earth      3.395e+11
Mars       3.379e+11
Jupiter    3.374e+11
Saturn     3.353e+11
Uranus     3.409e+11
Neptune    3.371e+11
Pluto      3.373e+11