Obs. : 2016-02-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.242e+11
Venus      4.198e+11
Earth      4.567e+11
Mars       4.201e+11
Jupiter    4.491e+11
Saturn     4.172e+11
Uranus     4.440e+11
Neptune    4.375e+11
Pluto      4.242e+11