Obs. : 2026-04-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.335e+08
Venus      7.192e+08
Earth      7.602e+08
Mars       7.335e+08
Jupiter    7.238e+08
Saturn     7.376e+08
Uranus     6.865e+08
Neptune    7.376e+08
Pluto      8.118e+08