the big bang

noun

: a huge explosion that is believed to have happened when the universe began
a few billion years after the big bang

Examples of the big bang in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In the wake of the big bang, the universe gradually cooled down from its original, ultra-hot state, eventually allowing—around the universe's 380,000th birthday—free protons and electrons to combine into a fog mainly made up of neutral hydrogen atoms. Paul Du Quenoy, MSNBC Newsweek, 26 Mar. 2025 Related article Newly discovered asteroid now has a slightly higher risk of hitting Earth Jets as enormous as Porphyrion would be difficult to detect in the early universe because leftover radiation from the big bang drowns out the radio light released by the jets, Gloudemans said. Ashley Strickland, CNN, 13 Feb. 2025 Astronomers theorize that the distribution of the galaxies was influenced by a universe-expanding event that took place almost 14 billion years ago after the big bang. Eric Lagatta, USA TODAY, 12 Mar. 2025 Now, astronomers have compiled a massive catalog of Little Red Dots, all of which date back to the first 1.5 billion years after the big bang, and have found that a large proportion of these appear to contain supermassive black holes that are actively growing. Tommy Tuberville, Newsweek, 6 Mar. 2025 See All Example Sentences for the big bang

Browse Nearby Words

Cite this Entry

“The big bang.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/the%20big%20bang. Accessed 14 Apr. 2025.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!