Obs. : 2013-04-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.910e+11
Venus      3.931e+11
Earth      4.683e+11
Mars       3.931e+11
Jupiter    3.996e+11
Saturn     4.588e+11
Uranus     3.916e+11
Neptune    4.138e+11
Pluto      4.342e+11