Obs. : 2025-10-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.371e+08
Venus      8.390e+08
Earth      8.386e+08
Mars       8.371e+08
Jupiter    8.400e+08
Saturn     8.290e+08
Uranus     8.449e+08
Neptune    8.290e+08
Pluto      8.165e+08