Obs. : 2023-10-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.922e+08
Venus      8.400e+08
Earth      8.939e+08
Mars       8.922e+08
Jupiter    8.868e+08
Saturn     9.158e+08
Uranus     8.818e+08
Neptune    9.065e+08
Pluto      9.211e+08