Obs. : 2020-07-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.311e+08
Venus      6.224e+08
Earth      6.251e+08
Mars       6.136e+08
Jupiter    6.251e+08
Saturn     6.217e+08
Uranus     6.146e+08
Neptune    6.132e+08
Pluto      6.217e+08