Obs. : 2025-11-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.760e+08
Venus      7.716e+08
Earth      7.737e+08
Mars       7.760e+08
Jupiter    7.761e+08
Saturn     7.949e+08
Uranus     7.729e+08
Neptune    7.825e+08
Pluto      8.098e+08