Obs. : 2024-07-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    1.060e+09
Venus      1.045e+09
Earth      9.810e+08
Mars       9.460e+08
Jupiter    9.460e+08
Saturn     9.801e+08
Uranus     9.449e+08
Neptune    9.801e+08
Pluto      9.839e+08