Obs. : 2025-06-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.067e+08
Venus      8.036e+08
Earth      7.881e+08
Mars       8.002e+08
Jupiter    8.032e+08
Saturn     7.970e+08
Uranus     8.036e+08
Neptune    8.006e+08
Pluto      7.912e+08