Obs. : 2009-10-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.479e+11
Venus      3.479e+11
Earth      3.449e+11
Mars       3.485e+11
Jupiter    3.475e+11
Saturn     3.479e+11
Uranus     3.449e+11
Neptune    3.475e+11
Pluto      3.622e+11