Obs. : 2015-01-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.695e+11
Venus      3.690e+11
Earth      3.538e+11
Mars       3.692e+11
Jupiter    3.479e+11
Saturn     3.325e+11
Uranus     3.693e+11
Neptune    3.690e+11
Pluto      3.469e+11