Obs. : 2018-04-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.182e+11
Venus      4.163e+11
Earth      4.021e+11
Mars       4.043e+11
Jupiter    4.021e+11
Saturn     4.043e+11
Uranus     4.231e+11
Neptune    4.136e+11
Pluto      4.043e+11