Obs. : 2015-10-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.225e+11
Venus      4.180e+11
Earth      4.336e+11
Mars       4.187e+11
Jupiter    4.180e+11
Saturn     4.528e+11
Uranus     4.570e+11
Neptune    4.766e+11
Pluto      4.736e+11