Obs. : 2013-01-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.380e+11
Venus      4.454e+11
Earth      4.138e+11
Mars       4.337e+11
Jupiter    4.168e+11
Saturn     4.262e+11
Uranus     4.265e+11
Neptune    4.337e+11
Pluto      4.454e+11