Obs. : 2015-06-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.918e+11
Venus      5.202e+11
Earth      4.409e+11
Mars       5.009e+11
Jupiter    5.131e+11
Saturn     4.429e+11
Uranus     4.791e+11
Neptune    4.567e+11
Pluto      4.404e+11