Obs. : 2013-02-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.436e+11
Venus      4.310e+11
Earth      4.034e+11
Mars       4.436e+11
Jupiter    4.184e+11
Saturn     3.988e+11
Uranus     4.430e+11
Neptune    4.310e+11
Pluto      4.001e+11