Obs. : 2023-10-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.561e+08
Venus      8.200e+08
Earth      9.255e+08
Mars       8.561e+08
Jupiter    9.248e+08
Saturn     9.209e+08
Uranus     9.248e+08
Neptune    9.249e+08
Pluto      9.108e+08