The universe’s accelerating expansion has long puzzled physicists. For decades, dark energy, an unseen force thought to make up nearly 70% of the cosmos, has been the leading explanation. But a new ...

Over the past year, there has been a vigorous debate among scientists – and more broadly – about whether global warming is “accelerating”. This, in turn, has led to questions about whether the world ...

This story was updated at 2:40 p.m. on Aug. 18. Mathematicians have proposed an alternative explanation forthe accelerating expansion of the universe that does not rely on the mystifyingidea of dark ...