Obs. : 2013-04-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.885e+11
Venus      4.143e+11
Earth      4.512e+11
Mars       4.143e+11
Jupiter    4.321e+11
Saturn     4.380e+11
Uranus     3.985e+11
Neptune    3.945e+11
Pluto      3.866e+11