New observations of the cosmos show that the dark energy, a mysterious force that accelerates the expansion of the universe, ...

Measuring light that has travelled for almost 14 billion years to reach a telescope high in the Chilean Andes, the two new ...

The Atacama Cosmology Telescope (ACT) collaboration, which includes researchers from the University of Toronto, recently ...

The images received from this telescope are known as the cosmic microwave background, and they provide an exceptionally clear ...

A long-simmering disagreement over the universe’s present-day expansion rate shows no signs of resolution, leaving experts ...

Albert Einstein was not happy. In the early years of the 20th century he had come up with his General Theory of Relativity, ...