Obs. : 2017-07-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.653e+11
Venus      3.739e+11
Earth      3.740e+11
Mars       3.632e+11
Jupiter    3.763e+11
Saturn     3.730e+11
Uranus     3.758e+11
Neptune    3.767e+11
Pluto      3.742e+11