Obs. : 2020-03-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.356e+08
Venus      5.996e+08
Earth      6.177e+08
Mars       6.200e+08
Jupiter    6.224e+08
Saturn     6.224e+08
Uranus     5.996e+08
Neptune    6.311e+08
Pluto      6.224e+08