Obs. : 2009-01-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.493e+11
Venus      3.449e+11
Earth      3.441e+11
Mars       3.493e+11
Jupiter    3.493e+11
Saturn     3.412e+11
Uranus     3.483e+11
Neptune    3.503e+11
Pluto      3.385e+11