Obs. : 2016-04-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.043e+11
Venus      3.993e+11
Earth      4.144e+11
Mars       4.140e+11
Jupiter    4.057e+11
Saturn     4.140e+11
Uranus     4.008e+11
Neptune    4.002e+11
Pluto      4.076e+11