Obs. : 2020-02-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.270e+08
Venus      5.948e+08
Earth      6.106e+08
Mars       6.201e+08
Jupiter    6.231e+08
Saturn     6.256e+08
Uranus     5.893e+08
Neptune    6.158e+08
Pluto      6.256e+08