Obs. : 2026-01-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.202e+08
Venus      7.967e+08
Earth      8.748e+08
Mars       8.202e+08
Jupiter    8.672e+08
Saturn     7.863e+08
Uranus     8.084e+08
Neptune    7.863e+08
Pluto      7.967e+08