Obs. : 2025-03-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.578e+08
Venus      9.578e+08
Earth      8.816e+08
Mars       8.788e+08
Jupiter    8.760e+08
Saturn     9.705e+08
Uranus     8.919e+08
Neptune    9.578e+08
Pluto      9.369e+08