Obs. : 2024-04-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.316e+08
Venus      9.113e+08
Earth      1.052e+09
Mars       9.500e+08
Jupiter    8.797e+08
Saturn     9.631e+08
Uranus     8.797e+08
Neptune    9.500e+08
Pluto      1.002e+09