Obs. : 2025-12-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.135e+08
Venus      8.135e+08
Earth      9.045e+08
Mars       8.130e+08
Jupiter    9.070e+08
Saturn     8.689e+08
Uranus     9.255e+08
Neptune    8.689e+08
Pluto      8.138e+08