Obs. : 2018-06-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.762e+11
Venus      3.823e+11
Earth      3.811e+11
Mars       3.741e+11
Jupiter    3.825e+11
Saturn     3.758e+11
Uranus     3.742e+11
Neptune    3.703e+11
Pluto      3.747e+11