Obs. : 2015-04-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.996e+11
Venus      5.047e+11
Earth      4.588e+11
Mars       4.915e+11
Jupiter    4.803e+11
Saturn     4.588e+11
Uranus     4.768e+11
Neptune    4.558e+11
Pluto      4.552e+11