Obs. : 2020-06-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.364e+08
Venus      6.268e+08
Earth      6.329e+08
Mars       6.038e+08
Jupiter    6.210e+08
Saturn     6.156e+08
Uranus     6.160e+08
Neptune    6.038e+08
Pluto      6.210e+08