Obs. : 2024-07-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    1.030e+09
Venus      1.007e+09
Earth      9.857e+08
Mars       9.430e+08
Jupiter    9.430e+08
Saturn     9.899e+08
Uranus     9.545e+08
Neptune    9.868e+08
Pluto      9.838e+08