Obs. : 2016-02-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.252e+11
Venus      4.252e+11
Earth      3.987e+11
Mars       4.054e+11
Jupiter    4.001e+11
Saturn     4.105e+11
Uranus     4.013e+11
Neptune    4.212e+11
Pluto      4.231e+11