Obs. : 2025-05-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.873e+08
Venus      7.863e+08
Earth      8.006e+08
Mars       8.110e+08
Jupiter    7.870e+08
Saturn     7.863e+08
Uranus     7.844e+08
Neptune    7.863e+08
Pluto      7.545e+08