Obs. : 2025-05-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.548e+08
Venus      8.492e+08
Earth      8.210e+08
Mars       7.953e+08
Jupiter    8.247e+08
Saturn     8.404e+08
Uranus     8.447e+08
Neptune    8.404e+08
Pluto      8.067e+08