Obs. : 2025-07-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.200e+08
Venus      8.159e+08
Earth      8.194e+08
Mars       8.187e+08
Jupiter    8.153e+08
Saturn     8.327e+08
Uranus     8.188e+08
Neptune    8.327e+08
Pluto      8.184e+08