Obs. : 2024-08-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    1.100e+09
Venus      1.078e+09
Earth      9.857e+08
Mars       1.014e+09
Jupiter    1.014e+09
Saturn     9.857e+08
Uranus     9.835e+08
Neptune    9.857e+08
Pluto      9.570e+08