The universe isn’t behaving like we thought it was, scientists say

The universe’s expansion appears to be slowing down, not speeding up as we thought, scientists have said.

The expansion of the universe is already confusing and controversial, with researchers unclear exactly how fast it is going and why it is doing so. The dispute over the expansion has only become more fraught as we have gathered more and more precise measurements.

Until now, researchers have believed that a force known as dark energy is leading the expansion of the universe to speed up. But a new study finds that it is not speeding up at all – but doing the opposite.

"Our study shows that the universe has already entered a phase of decelerated expansion at the present epoch and that dark energy evolves with time much more rapidly than previously thought,” said Young-Wook Lee, of Yons