Obs. : 2015-05-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.035e+11
Venus      5.026e+11
Earth      4.662e+11
Mars       5.043e+11
Jupiter    4.577e+11
Saturn     4.662e+11
Uranus     4.870e+11
Neptune    4.664e+11
Pluto      4.659e+11