Obs. : 2013-01-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.520e+11
Venus      4.365e+11
Earth      4.170e+11
Mars       4.512e+11
Jupiter    4.248e+11
Saturn     3.979e+11
Uranus     4.391e+11
Neptune    4.512e+11
Pluto      4.365e+11