Obs. : 2015-02-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.103e+11
Venus      4.944e+11
Earth      4.684e+11
Mars       4.944e+11
Jupiter    4.659e+11
Saturn     4.925e+11
Uranus     4.891e+11
Neptune    4.999e+11
Pluto      5.117e+11