Obs. : 2012-04-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.231e+11
Venus      4.067e+11
Earth      4.042e+11
Mars       4.036e+11
Jupiter    4.103e+11
Saturn     4.080e+11
Uranus     4.206e+11
Neptune    4.250e+11
Pluto      4.142e+11