Obs. : 2018-02-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.779e+11
Venus      3.679e+11
Earth      3.920e+11
Mars       3.816e+11
Jupiter    3.878e+11
Saturn     3.825e+11
Uranus     3.614e+11
Neptune    3.646e+11
Pluto      3.894e+11