Cosmologists have a pretty good idea how galaxies change over time. Telescopes pick out millions of them, covering every possible shape, colour and phase of life. By examining these galaxies, and peering deep into space and far back in time, cosmologists are able to trace out the standard lifecycle of galaxies, and project what might happen in the future.
The Week in Space and Physics #9
The Week in Space and Physics #9
The Week in Space and Physics #9
Cosmologists have a pretty good idea how galaxies change over time. Telescopes pick out millions of them, covering every possible shape, colour and phase of life. By examining these galaxies, and peering deep into space and far back in time, cosmologists are able to trace out the standard lifecycle of galaxies, and project what might happen in the future.