New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from the early cosmos.

The universe is expanding, and while that fact is fascinating, it also creates a question that trips people up: if it’s growing, what exactly is it expanding into? Our brains are used to picturing ...

An expanding universe complicates this picture just a little bit, because the universe absolutely refuses to be straightforward. Objects are still emitting light, and that light takes time to travel ...

Here’s what you’ll learn when you read this story: A new paper adjusts an equation that defines our universe in response to recent new data. The cosmological constant, which describes how our universe ...

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously thought, a new study suggests. "Remarkable" findings published today in ...

There are moments in the theme park world when the ground seems to shift—when a project doesn’t just add to the skyline but redefines what’s possible. Orlando, long the global capital of family ...

"If these results are confirmed, it would mark a major paradigm shift in cosmology since the discovery of dark energy 27 years ago." As if dark energy weren't already mysterious and baffling enough, ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

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Scientists have long held that the universe is expanding at an ever-increasing rate, driven by a mysterious but measurable force known as dark energy. Now, a new study might upend that idea, ...