Obs. : 2019-02-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.444e+11
Venus      3.599e+11
Earth      3.489e+11
Mars       3.380e+11
Jupiter    3.538e+11
Saturn     3.599e+11
Uranus     3.380e+11
Neptune    3.398e+11
Pluto      3.614e+11