Observations of Circinus X-1 in July 2007 revealed the presence of X-ray jets normally found in black hole systems .
Circinus X-1 is an X-ray binary star system that includes a neutron star .
Observations of star system   in July 2007 revealed the presence of X-ray jets normally found in black hole systems .
Circinus X-1 is an X-ray binary star system that includes a neutron star .