Obs. : 2017-09-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.484e+11
Venus      3.428e+11
Earth      3.706e+11
Mars       3.484e+11
Jupiter    3.531e+11
Saturn     3.689e+11
Uranus     3.626e+11
Neptune    3.797e+11
Pluto      3.804e+11