Obs. : 2015-04-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.298e+11
Venus      5.070e+11
Earth      4.708e+11
Mars       5.194e+11
Jupiter    4.847e+11
Saturn     4.774e+11
Uranus     5.345e+11
Neptune    5.305e+11
Pluto      5.064e+11