Obs. : 2025-09-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.614e+08
Venus      7.545e+08
Earth      7.398e+08
Mars       7.841e+08
Jupiter    7.366e+08
Saturn     7.355e+08
Uranus     7.359e+08
Neptune    7.355e+08
Pluto      7.698e+08