Obs. : 2015-09-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.173e+11
Venus      4.292e+11
Earth      4.390e+11
Mars       4.292e+11
Jupiter    4.263e+11
Saturn     4.262e+11
Uranus     4.354e+11
Neptune    4.416e+11
Pluto      4.352e+11