Obs. : 2013-04-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.944e+11
Venus      5.008e+11
Earth      4.136e+11
Mars       5.015e+11
Jupiter    4.897e+11
Saturn     4.176e+11
Uranus     4.944e+11
Neptune    4.519e+11
Pluto      4.134e+11