Obs. : 2015-04-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.205e+11
Venus      5.018e+11
Earth      4.710e+11
Mars       5.120e+11
Jupiter    4.782e+11
Saturn     4.781e+11
Uranus     5.267e+11
Neptune    5.246e+11
Pluto      5.129e+11