Obs. : 2011-04-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.166e+11
Venus      4.548e+11
Earth      4.259e+11
Mars       4.255e+11
Jupiter    4.255e+11
Saturn     4.259e+11
Uranus     4.331e+11
Neptune    4.564e+11
Pluto      4.496e+11