Obs. : 2013-05-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.120e+11
Venus      4.094e+11
Earth      4.438e+11
Mars       4.120e+11
Jupiter    4.040e+11
Saturn     4.330e+11
Uranus     4.274e+11
Neptune    4.383e+11
Pluto      4.440e+11