Obs. : 2024-04-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.817e+08
Venus      8.817e+08
Earth      1.056e+09
Mars       9.053e+08
Jupiter    8.432e+08
Saturn     9.053e+08
Uranus     8.432e+08
Neptune    9.053e+08
Pluto      9.370e+08