Obs. : 2016-08-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.866e+11
Venus      3.866e+11
Earth      4.300e+11
Mars       4.150e+11
Jupiter    3.879e+11
Saturn     4.187e+11
Uranus     4.113e+11
Neptune    4.208e+11
Pluto      4.256e+11