Obs. : 2020-01-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.262e+08
Venus      6.256e+08
Earth      6.125e+08
Mars       5.992e+08
Jupiter    6.093e+08
Saturn     6.193e+08
Uranus     6.133e+08
Neptune    6.248e+08
Pluto      6.193e+08