Obs. : 2018-01-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.388e+11
Venus      3.428e+11
Earth      3.293e+11
Mars       3.271e+11
Jupiter    3.259e+11
Saturn     3.298e+11
Uranus     3.295e+11
Neptune    3.391e+11
Pluto      3.341e+11