Obs. : 2019-02-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.478e+11
Venus      3.533e+11
Earth      3.536e+11
Mars       3.403e+11
Jupiter    3.558e+11
Saturn     3.533e+11
Uranus     3.403e+11
Neptune    3.452e+11
Pluto      3.533e+11