Obs. : 2026-06-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.738e+08
Venus      7.789e+08
Earth      8.288e+08
Mars       7.614e+08
Jupiter    7.738e+08
Saturn     8.013e+08
Uranus     7.598e+08
Neptune    8.013e+08
Pluto      8.303e+08