Obs. : 2018-03-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.516e+11
Venus      3.516e+11
Earth      3.508e+11
Mars       3.504e+11
Jupiter    3.523e+11
Saturn     3.504e+11
Uranus     3.504e+11
Neptune    3.545e+11
Pluto      3.502e+11