Obs. : 2020-02-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.171e+08
Venus      6.106e+08
Earth      6.153e+08
Mars       6.214e+08
Jupiter    6.245e+08
Saturn     6.272e+08
Uranus     6.066e+08
Neptune    6.171e+08
Pluto      6.272e+08