Obs. : 2011-03-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.428e+11
Venus      3.770e+11
Earth      4.074e+11
Mars       4.102e+11
Jupiter    4.357e+11
Saturn     3.919e+11
Uranus     4.102e+11
Neptune    3.770e+11
Pluto      3.560e+11