Obs. : 2017-06-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.633e+11
Venus      3.604e+11
Earth      3.613e+11
Mars       3.633e+11
Jupiter    3.640e+11
Saturn     3.596e+11
Uranus     3.558e+11
Neptune    3.491e+11
Pluto      3.555e+11