Obs. : 2012-07-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.380e+11
Venus      4.065e+11
Earth      4.168e+11
Mars       4.453e+11
Jupiter    4.008e+11
Saturn     4.502e+11
Uranus     3.884e+11
Neptune    4.029e+11
Pluto      4.275e+11