Obs. : 2025-06-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.788e+08
Venus      7.634e+08
Earth      7.770e+08
Mars       7.888e+08
Jupiter    7.788e+08
Saturn     7.588e+08
Uranus     7.689e+08
Neptune    7.588e+08
Pluto      7.767e+08