Obs. : 2010-02-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.875e+11
Venus      3.898e+11
Earth      3.704e+11
Mars       3.704e+11
Jupiter    3.898e+11
Saturn     3.702e+11
Uranus     3.840e+11
Neptune    3.934e+11
Pluto      3.793e+11