Obs. : 2025-12-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.686e+08
Venus      8.901e+08
Earth      8.678e+08
Mars       8.937e+08
Jupiter    8.164e+08
Saturn     9.292e+08
Uranus     8.997e+08
Neptune    9.292e+08
Pluto      8.873e+08