Obs. : 2013-04-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.195e+11
Venus      3.994e+11
Earth      4.493e+11
Mars       3.994e+11
Jupiter    3.948e+11
Saturn     4.600e+11
Uranus     4.095e+11
Neptune    4.456e+11
Pluto      4.517e+11