Dec 8, 2025 · The most widely accepted explanation for the origin of the universe is the big-bang theory, which proposes that the universe began approximately 13.8 billion years ago in an extremely hot, …

Discoveries in the early 20th century lead to the Big Bang theory with a hot fireball, cooling and becoming less dense as the universe expanded, allowing the first subatomic particles and simple …

1 day ago · Big Bang science explains the universe origin, key evidence, unresolved tensions, and how new James Webb data is reshaping cosmic history.

Oct 22, 2024 · Around 13.8 billion years ago, the universe expanded faster than the speed of light for a fraction of a second, a period called cosmic inflation. Scientists aren’t sure what came before inflation …

Jul 26, 2025 · The universe’s structure today is a direct consequence of its beginning. The Big Bang gave us not only time and space, but the seeds of complexity that eventually bloomed into stars, …

Jan 18, 2017 · How did the universe begin—and what were its early days like? The most popular theory of our universe's origin centers on a cosmic cataclysm unmatched in all of history—the big bang.

Feb 14, 2025 · Over time, various theories have emerged, each offering a different perspective on the birth of the universe. In this list of the top 10 theories, we explore a range of ideas, from the widely …

May 14, 2024 · Origin of the universe: This article explores various theories about how the universe got started and how it will end.

Oct 19, 2023 · Throughout history, countless myths and scientific theories have tried to explain the universe's origins. The most widely accepted explanation is the big bang theory. Learn about the …

These black holes may be the seeds of the supermassive black holes we now find in the center of large galaxies, including the Milky Way. Studies into the Early Universe can provide meaningful insight into …