Obs. : 2025-06-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.166e+08
Venus      8.103e+08
Earth      7.951e+08
Mars       8.116e+08
Jupiter    8.138e+08
Saturn     8.023e+08
Uranus     8.103e+08
Neptune    8.023e+08
Pluto      7.974e+08