Obs. : 2016-12-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.427e+11
Venus      3.507e+11
Earth      3.390e+11
Mars       3.492e+11
Jupiter    3.252e+11
Saturn     3.365e+11
Uranus     3.413e+11
Neptune    3.492e+11
Pluto      3.460e+11