Obs. : 2026-02-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.219e+08
Venus      7.283e+08
Earth      7.351e+08
Mars       7.484e+08
Jupiter    7.151e+08
Saturn     7.145e+08
Uranus     6.899e+08
Neptune    7.145e+08
Pluto      7.414e+08