Obs. : 2020-02-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.248e+08
Venus      6.040e+08
Earth      6.081e+08
Mars       6.175e+08
Jupiter    6.221e+08
Saturn     6.221e+08
Uranus     5.940e+08
Neptune    6.160e+08
Pluto      6.221e+08