Obs. : 2015-02-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.732e+11
Venus      4.824e+11
Earth      5.314e+11
Mars       4.905e+11
Jupiter    5.242e+11
Saturn     4.950e+11
Uranus     4.975e+11
Neptune    4.824e+11
Pluto      4.813e+11