Obs. : 2025-02-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.859e+08
Venus      8.493e+08
Earth      8.351e+08
Mars       8.916e+08
Jupiter    9.004e+08
Saturn     8.478e+08
Uranus     9.000e+08
Neptune    8.493e+08
Pluto      9.006e+08