Obs. : 2013-12-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.139e+11
Venus      4.124e+11
Earth      4.322e+11
Mars       3.967e+11
Jupiter    4.245e+11
Saturn     4.098e+11
Uranus     4.290e+11
Neptune    4.183e+11
Pluto      4.129e+11