Obs. : 2018-03-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.510e+11
Venus      3.510e+11
Earth      3.468e+11
Mars       3.469e+11
Jupiter    3.487e+11
Saturn     3.469e+11
Uranus     3.480e+11
Neptune    3.528e+11
Pluto      3.468e+11