Unexpectedly calm cloud of ‘halo gas’ is revealed around an enormous galaxy four BILLION light years from Earth by mysterious energy pulse

A serene halo of gas has been found surrounding a galaxy around 4 billion light years from the Earth — but it is far less dense and turbulent than experts anticipated. The halo was detected by analysing a mysterious so-called ‘fast radio burst’ that had passed through it as it headed towards the Earth. These bursts are mysterious and powerful pulses of energy from distant galaxies, the origins of which are not yet known. However, the way such pulses are distorted as they pass through galactic halos can help us determine the halos’ properties. Galactic halos had previously been hard to analyse, as they cannot be seen with telescopes, but studying them may reveal how galaxies shed matter and evolve. Scroll down for video  A serene halo of gas has been found surrounding a galaxy 4 billion light years from the Earth — but it is far calmer than experts anticipated. The halo was detected by analysing a mysterious so-called ‘fast radio burst’ that had passed through it as it headed towards the Earth Astrophysicist Jean-Pierre Macquart of Australia’s Curtin University and the Perth-based International Centre for Radio Astronomy Research (ICRAR) and colleagues discovered the calm halo around a galaxy they have dubbed… Read full this story

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