A proposed five-satellite Cosmic Positioning System could measure cosmic distances directly and help address discrepancies in the Hubble constant through solar system–scale triangulation.

That the universe is expanding has been known for almost a hundred years now, but how fast? The exact rate of that expansion ...

A rare gravitationally lensed supernova called SN 2025wny appears in five separate images due to the gravity of two ...

Consensus on the universe’s expansion rate might be near, thanks to the James Webb telescope The biggest clash in cosmology might be inching closer to resolution, thanks to the James Webb Space ...

New research suggests that dark energy isn't needed to explain the acceleration in the expansion of the universe — instead suggesting giant voids in space are creating an illusion. When you purchase ...

New observations from the James Webb Space Telescope suggest that a new feature in the universe—not a flaw in telescope measurements—may be behind the decadelong mystery of why the universe is ...