Obs. : 2018-12-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.528e+11
Venus      3.526e+11
Earth      3.555e+11
Mars       3.604e+11
Jupiter    3.557e+11
Saturn     3.603e+11
Uranus     3.525e+11
Neptune    3.604e+11
Pluto      3.621e+11