Obs. : 2025-09-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.581e+08
Venus      9.207e+08
Earth      8.896e+08
Mars       8.429e+08
Jupiter    9.308e+08
Saturn     8.969e+08
Uranus     9.199e+08
Neptune    8.969e+08
Pluto      8.577e+08