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Hot Halo Surrounds Distant Galaxy - Universe Today
New Chandra observations of spiral galaxy NGC 5746 have revealed a large halo of hot gas surrounding the optical disk of the galaxy. This halo extends for more than 60,000 light years, but the galaxy itself doesn't seem to show any sign of active star formation. Computer simulations show that the hot gas is probably from the gradual inflow of intergalactic material left over after the galaxy first formed. Halos like this had been predicted on computer, but not seen around a galaxy until now.