Obs. : 2016-04-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.048e+11
Venus      3.994e+11
Earth      4.134e+11
Mars       4.125e+11
Jupiter    4.109e+11
Saturn     4.125e+11
Uranus     3.994e+11
Neptune    3.971e+11
Pluto      4.030e+11