Obs. : 2026-07-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.429e+08
Venus      8.628e+08
Earth      7.228e+08
Mars       7.923e+08
Jupiter    8.553e+08
Saturn     7.491e+08
Uranus     7.923e+08
Neptune    7.491e+08
Pluto      7.228e+08