Obs. : 2018-07-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.449e+11
Venus      3.508e+11
Earth      3.352e+11
Mars       3.352e+11
Jupiter    3.478e+11
Saturn     3.407e+11
Uranus     3.314e+11
Neptune    3.305e+11
Pluto      3.385e+11