Obs. : 2024-08-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    1.054e+09
Venus      1.076e+09
Earth      9.651e+08
Mars       9.708e+08
Jupiter    9.708e+08
Saturn     9.651e+08
Uranus     9.632e+08
Neptune    9.648e+08
Pluto      9.517e+08