Obs. : 2016-12-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    2.854e+11
Venus      2.856e+11
Earth      2.753e+11
Mars       2.847e+11
Jupiter    2.680e+11
Saturn     2.768e+11
Uranus     2.777e+11
Neptune    2.847e+11
Pluto      2.854e+11