Obs. : 2013-09-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.759e+11
Venus      3.723e+11
Earth      4.135e+11
Mars       4.019e+11
Jupiter    4.012e+11
Saturn     3.723e+11
Uranus     4.121e+11
Neptune    4.147e+11
Pluto      4.026e+11