Obs. : 2013-04-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.857e+11
Venus      4.072e+11
Earth      4.561e+11
Mars       4.072e+11
Jupiter    4.293e+11
Saturn     4.438e+11
Uranus     3.957e+11
Neptune    3.859e+11
Pluto      4.046e+11