Obs. : 2013-04-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.967e+11
Venus      4.896e+11
Earth      4.051e+11
Mars       4.946e+11
Jupiter    4.732e+11
Saturn     4.085e+11
Uranus     4.967e+11
Neptune    4.631e+11
Pluto      4.157e+11