Obs. : 2016-10-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.864e+11
Venus      3.873e+11
Earth      4.003e+11
Mars       4.092e+11
Jupiter    3.864e+11
Saturn     3.891e+11
Uranus     4.033e+11
Neptune    4.189e+11
Pluto      4.092e+11