Obs. : 2019-02-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.668e+11
Venus      3.722e+11
Earth      3.690e+11
Mars       3.615e+11
Jupiter    3.677e+11
Saturn     3.694e+11
Uranus     3.611e+11
Neptune    3.702e+11
Pluto      3.722e+11