Speedy universe expansion challenges Einstein’s theory

The universe is expanding faster than we thought, causing problems for cosmologists. It could even mean Einstein's theory of relativity needs revising

Its like a game of cat and mouse. Every time astronomers think they are getting close to understanding the universe, mother nature throws them another curveball to contend with.

Today's googly comes from the H0LiCOW collaboration and takes the form of a faster than expected expansion rate for the universe. Based on new observations taken with the Hubble Space Telescope, it confirms that a serious discrepancy lies at the heart of our astronomical understanding.