Obs. : 2025-01-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.877e+08
Venus      1.005e+09
Earth      9.423e+08
Mars       9.423e+08
Jupiter    9.703e+08
Saturn     1.023e+09
Uranus     1.014e+09
Neptune    1.035e+09
Pluto      9.614e+08