Obs. : 2013-09-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.796e+11
Venus      3.755e+11
Earth      3.920e+11
Mars       3.891e+11
Jupiter    3.949e+11
Saturn     3.755e+11
Uranus     3.968e+11
Neptune    3.823e+11
Pluto      3.687e+11