Obs. : 2022-04-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.716e+08
Venus      8.126e+08
Earth      7.824e+08
Mars       8.126e+08
Jupiter    8.275e+08
Saturn     8.126e+08
Uranus     7.615e+08
Neptune    8.275e+08
Pluto      7.912e+08