We report the discovery of multi-scale X-ray jets from the accreting neutron star X-ray binary , Circinus X-1 .
The bipolar outflows show wide opening angles and are spatially coincident with the radio jets seen in new high-resolution radio images of the region .
The morphology of the emission regions suggests that the jets from Circinus X-1 are running into a terminal shock with the interstellar medium , as is seen in powerful radio galaxies .
This and other observations indicate that the jets have a wide opening angle , suggesting that the jets are either not very well collimated or precessing .
We interpret the spectra from the shocks as cooled synchrotron emission and derive a cooling age of \sim 1600 yr .
This allows us to constrain the jet power to be 3 \times 10 ^ { 35 } { erg s ^ { -1 } } \lesssim P _ { jet } \lesssim 2 \times 10 ^ { 37 } % { erg s ^ { -1 } } , making this one of a few microquasars with a direct measurement of its jet power and the only known microquasar that exhibits stationary large-scale X-ray emission .