Obs. : 2016-02-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.298e+11
Venus      4.298e+11
Earth      4.026e+11
Mars       3.997e+11
Jupiter    3.979e+11
Saturn     4.017e+11
Uranus     4.122e+11
Neptune    4.382e+11
Pluto      4.128e+11