Obs. : 2015-04-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.969e+11
Venus      5.093e+11
Earth      4.922e+11
Mars       4.894e+11
Jupiter    5.301e+11
Saturn     4.922e+11
Uranus     4.832e+11
Neptune    4.781e+11
Pluto      4.797e+11