Yes, the universe’s expansion is still accelerating, researchers say

Taking a fresh look at data involving a specific type of stellar explosion, a team of researchers says it has confirmed the long-accepted notion that the universe is expanding at ​an accelerated rate – the very observation that led to the identification in the 1990s of an enigmatic cosmic force called dark energy.

The study’s results rebut research published ‌last year that concluded that this cosmic expansion is no longer speeding up – a finding that had challenged the basic understanding of...