Obs. : 2014-02-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.675e+11
Venus      4.315e+11
Earth      4.332e+11
Mars       4.275e+11
Jupiter    4.335e+11
Saturn     4.245e+11
Uranus     4.819e+11
Neptune    4.886e+11
Pluto      4.283e+11