Obs. : 2025-02-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    1.005e+09
Venus      9.808e+08
Earth      9.606e+08
Mars       9.605e+08
Jupiter    9.135e+08
Saturn     1.001e+09
Uranus     9.108e+08
Neptune    1.001e+09
Pluto      1.005e+09