Obs. : 2023-01-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.339e+08
Venus      9.260e+08
Earth      8.780e+08
Mars       8.166e+08
Jupiter    8.761e+08
Saturn     9.451e+08
Uranus     8.166e+08
Neptune    9.041e+08
Pluto      9.438e+08