Obs. : 2025-05-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.572e+08
Venus      8.524e+08
Earth      8.141e+08
Mars       7.971e+08
Jupiter    8.154e+08
Saturn     8.457e+08
Uranus     8.338e+08
Neptune    8.457e+08
Pluto      8.128e+08