Obs. : 2017-04-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.931e+11
Venus      3.990e+11
Earth      3.691e+11
Mars       3.738e+11
Jupiter    3.632e+11
Saturn     3.754e+11
Uranus     3.931e+11
Neptune    3.925e+11
Pluto      3.745e+11