Obs. : 2025-05-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.841e+08
Venus      7.917e+08
Earth      8.268e+08
Mars       7.831e+08
Jupiter    7.788e+08
Saturn     7.903e+08
Uranus     7.853e+08
Neptune    7.903e+08
Pluto      7.997e+08