Obs. : 2023-05-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.171e+08
Venus      8.739e+08
Earth      8.807e+08
Mars       8.739e+08
Jupiter    9.161e+08
Saturn     8.798e+08
Uranus     9.151e+08
Neptune    8.918e+08
Pluto      8.637e+08