Obs. : 2019-02-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.438e+11
Venus      3.615e+11
Earth      3.496e+11
Mars       3.403e+11
Jupiter    3.532e+11
Saturn     3.615e+11
Uranus     3.403e+11
Neptune    3.420e+11
Pluto      3.632e+11