Obs. : 2025-04-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.939e+08
Venus      8.939e+08
Earth      8.640e+08
Mars       8.408e+08
Jupiter    8.467e+08
Saturn     8.939e+08
Uranus     8.554e+08
Neptune    8.939e+08
Pluto      8.498e+08