Obs. : 2010-12-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.800e+11
Venus      3.775e+11
Earth      3.784e+11
Mars       3.805e+11
Jupiter    3.706e+11
Saturn     3.760e+11
Uranus     3.706e+11
Neptune    3.733e+11
Pluto      3.805e+11