What 120,000 galaxies have to do with understanding our place in the universe.
We’ve previously looked at different ways to grasp the scale of the universe, but how can we measure its growth? Australian Ph.D. student Florian Beutler has created the most accurate measurement yet of how fast the universe is expanding. Working at the International Centre for Radio Astronomy Research (ICRAR), he used the Hubble constant and data from the 6dF Galaxy Survey, the most ambitious survey to date of over 120,000 galaxies across the southern sky, collected between 2001 and 2005. The result is a remarkable map of the expansion of universe, animated here to unfold before your very eyes.
For more on the universe, its history, its future and its mystery, don’t forget the excellent and timeless Stephen Hawking and the Theory of Everything.