Obs. : 2018-05-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.395e+11
Venus      4.266e+11
Earth      4.280e+11
Mars       4.282e+11
Jupiter    4.280e+11
Saturn     4.259e+11
Uranus     4.395e+11
Neptune    4.321e+11
Pluto      4.241e+11