Obs. : 2023-05-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.032e+08
Venus      8.660e+08
Earth      8.697e+08
Mars       8.670e+08
Jupiter    9.032e+08
Saturn     9.057e+08
Uranus     8.897e+08
Neptune    9.238e+08
Pluto      8.720e+08