Obs. : 2024-04-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.688e+08
Venus      9.516e+08
Earth      1.057e+09
Mars       9.912e+08
Jupiter    9.174e+08
Saturn     1.012e+09
Uranus     9.174e+08
Neptune    9.912e+08
Pluto      1.074e+09