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Last updated on April 21, 2014 at 5:21 EDT
Microquasar GRS 1915105 V V1487 Aql
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Microquasar GRS 1915+105 (V* V1487 Aql)

November 4, 2003
This sequence of VLA images shows the violent ejection of twin radio-emitting blobs of plasma, from a black hole of about 14 solar masses, residing in our own Galaxy. In this sequence of six images shown (epochs appear on the right) we see, on top, the stationary core of the hard X-ray source (likely a binary system with the black hole as one of the components) . One day after this observation, a major ejection event produced two condensations that move to the right and left. The cross marks the position of the stationary core of the source. The condensation moving to the left is approaching us obliquely and appears to displace in the sky at 125 percent of the speed of light; this is however only a relativistic illusion and the true speed of both condensations is 92 percent of the speed of light.