Obs. : 2025-02-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.577e+08
Venus      9.707e+08
Earth      8.798e+08
Mars       8.767e+08
Jupiter    8.898e+08
Saturn     9.337e+08
Uranus     9.402e+08
Neptune    9.577e+08
Pluto      8.511e+08