Obs. : 2018-09-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.392e+11
Venus      3.441e+11
Earth      3.507e+11
Mars       3.423e+11
Jupiter    3.404e+11
Saturn     3.488e+11
Uranus     3.507e+11
Neptune    3.435e+11
Pluto      3.466e+11