Obs. : 2015-04-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.539e+11
Venus      5.377e+11
Earth      4.824e+11
Mars       5.490e+11
Jupiter    5.051e+11
Saturn     4.828e+11
Uranus     5.623e+11
Neptune    5.419e+11
Pluto      4.986e+11