Obs. : 2011-05-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.280e+11
Venus      4.280e+11
Earth      4.294e+11
Mars       4.280e+11
Jupiter    4.280e+11
Saturn     4.167e+11
Uranus     4.313e+11
Neptune    4.248e+11
Pluto      4.280e+11