Obs. : 2008-10-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.477e+11
Venus      3.615e+11
Earth      3.493e+11
Mars       3.569e+11
Jupiter    3.602e+11
Saturn     3.488e+11
Uranus     3.484e+11
Neptune    3.515e+11
Pluto      3.622e+11