Source Radio, a radio station operating from Coventry, England
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Radio noise source, a device that emits radio waves at a certain frequency, used to calibrate radio telescope
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Professor Samuel Okoye - was black Africa's first PhD in Radio Astronomy who along with Antony Hewish of the University of Cambridge discovered the radio source of Crab Nebula neutron star.
Radio snapshot observations with the VLA ruled out one of these fields because it contained a bright radio source, and the final decision between the other two was made on the basis of the availability of guide stars near the field: Hubble observations normally require a pair of nearby stars on which the telescope's Fine Guidance Sensors can lock during an exposure, but given the importance of the HDF observations, the working group required a second set of back-up guide stars.
Three hundred years later, the American astronomical historian William Ashworth suggested that what Flamsteed may have seen was the most recent supernova in the galaxy's history, an event which would leave as its remnant the strongest radio source outside of the solar system, known in the third Cambridge (3C) catalogue as 3C 461 and commonly called Cassiopeia A by astronomers.