Obs. : 2026-06-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.694e+08
Venus      7.663e+08
Earth      7.774e+08
Mars       7.787e+08
Jupiter    7.663e+08
Saturn     7.985e+08
Uranus     7.767e+08
Neptune    8.091e+08
Pluto      7.903e+08