Obs. : 2014-04-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.202e+11
Venus      4.200e+11
Earth      4.453e+11
Mars       4.561e+11
Jupiter    4.254e+11
Saturn     4.453e+11
Uranus     4.192e+11
Neptune    4.198e+11
Pluto      4.271e+11