Obs. : 2015-01-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.885e+11
Venus      3.883e+11
Earth      3.538e+11
Mars       3.855e+11
Jupiter    3.479e+11
Saturn     3.507e+11
Uranus     3.772e+11
Neptune    3.883e+11
Pluto      3.750e+11