Obs. : 2026-04-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.830e+08
Venus      7.262e+08
Earth      7.177e+08
Mars       7.830e+08
Jupiter    7.122e+08
Saturn     7.593e+08
Uranus     7.232e+08
Neptune    7.830e+08
Pluto      8.043e+08