Obs. : 2025-07-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.191e+08
Venus      7.947e+08
Earth      8.116e+08
Mars       8.216e+08
Jupiter    8.064e+08
Saturn     7.956e+08
Uranus     7.947e+08
Neptune    7.956e+08
Pluto      8.116e+08