Obs. : 2010-01-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.445e+11
Venus      3.602e+11
Earth      3.688e+11
Mars       3.755e+11
Jupiter    3.621e+11
Saturn     3.504e+11
Uranus     3.512e+11
Neptune    3.650e+11
Pluto      3.445e+11