Obs. : 2011-02-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.953e+11
Venus      3.896e+11
Earth      3.737e+11
Mars       3.953e+11
Jupiter    3.929e+11
Saturn     3.821e+11
Uranus     3.986e+11
Neptune    3.953e+11
Pluto      3.888e+11