Obs. : 2015-02-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.084e+11
Venus      4.957e+11
Earth      4.686e+11
Mars       4.957e+11
Jupiter    4.660e+11
Saturn     5.010e+11
Uranus     4.889e+11
Neptune    4.999e+11
Pluto      5.116e+11