Fiction:Biggest galaxy

This galaxy is made of ultraviolet radiation and if you enter it, you will immediately get sunburnt. The two galaxies around it, Subomnigal and Orbiter of Omnigal are also made by the Omnigal pulsar but were abandoned and after that, it began creating Omnigal, so it is the youngest in the three. Subomnigal is 1000000000 light years across or 1000 times smaller than Omnigal while Orbiter of Omnigal is 1000000 light years across, which is 1000000 times smaller than Omnigal but 10 times bigger than the Milky way.