Obs. : 2015-05-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.700e+11
Venus      4.759e+11
Earth      5.046e+11
Mars       4.681e+11
Jupiter    4.813e+11
Saturn     5.047e+11
Uranus     4.599e+11
Neptune    4.637e+11
Pluto      4.965e+11