A new theory published late last year is offering an explanation as to why our universe is expanding at an accelerating rate.

Evidence supporting this theory includes the cosmic microwave background, a faint "echo" of the universe's early expansion that scientists can study in detail. While the Big Bang Theory is widely ...

In 1927, the year he got his PhD from MIT, LeMaitre proposed this theory, in which he stated that the expanding universe was the ... and named his theory "big bang." LeMaitre's ideas opened ...

If the Universe is expanding, then in the past it must ... And while the new pictures don’t challenge the Big Bang theory, they do mean there’s still plenty left to explain about how the ...

Approximately 13.8 billion years ago, the universe originated from a singularity, swiftly expanding and cooling to create the ...

The widely accepted cosmological model begins with the Big Bang, followed by a rapid phase of inflationary expansion. This theory aligns well with observations of the cosmos such as the ...

"The Hubble tension is now a Hubble crisis." The mystery of the Hubble tension has deepened with the startling finding that ...

Physicist Alan Guth, the father of cosmic inflation theory, describes emerging ... Geographic Image Collection/Alamy Our universe began with a bang—a big bang. The explosion stretched the ...

Nobel laureate Dr. James Peebles will discuss the still-unanswered questions regarding the expansion of the universe, dark matter and more. We have good evidence that the universe we see around us is ...

Dark energy is still a mystery, but powerful new telescopes are set to uncover clues. With NASA and ESA leading the charge, ...

This semi-classical theory has already predicted phenomena like Hawking radiation from black holes and particle creation in expanding spacetimes. However, these predictions have been hard to ...