LONDON: A large proportion of galaxies have undergone a major ‘metamorphosis’ since they were initially formed after the Big Bang, scientists have found for the first time.
By observing the sky as it is today, and peering back in time using the Hubble and Herschel telescopes, a team of international scientists led by Cardiff University, has shown for the first time that galaxies can change their structure over the course of their lifetime.
By providing the first direct evidence of the extent of this transformation, the team hopes to shed light on the processes that caused these dramatic changes, and therefore gain a greater understanding of the appearance and properties of the Universe as we know it today.
The researchers observed around 10,000 galaxies currently present in the Universe using a survey of the sky created by the Herschel ATLAS and GAMA projects.
The researchers then classified the galaxies into the two main types: flat, rotating, disc-shaped galaxies (much like our own galaxy, the Milky Way); and large, spherical galaxies with a swarm of disordered stars.
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