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cosmic background radiation

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Word: Cosmic Background Radiation

Part of Speech: Noun

Definition: Cosmic background radiation is a type of energy that fills the whole universe. It is the leftover heat from the Big Bang, which was an enormous explosion that created our universe around 13.8 billion years ago. Today, this radiation is very cold, with an average temperature of about 2.725 Kelvin (which is just above absolute zero).

Usage Instructions:
  • When to Use: You can use "cosmic background radiation" when discussing topics related to astronomy, cosmology, or the origins of the universe.
  • How to Use: It is often used in scientific discussions or writings about the universe's history and structure.
Example:
  • "Scientists study cosmic background radiation to learn more about how the universe began."
Advanced Usage:

In advanced discussions, you might hear about cosmic background radiation in relation to theories of the universe's expansion, the formation of galaxies, or the study of microwave radiation.

Word Variants:
  • Cosmic (adjective): Related to the universe.
  • Background (noun): The area or scenery behind the main subject.
Different Meanings:
  • Cosmic can also refer to something vast or extraordinary, not just related to space. For example, "a cosmic event" could mean a significant or monumental occurrence.
Synonyms:
  • Cosmic Microwave Background (CMB): A more specific term referring to the microwave radiation that is a remnant of the Big Bang.
  • Universal radiation: A broader term that can refer to radiation present throughout the universe.
Idioms and Phrasal Verbs:

There are no specific idioms or phrasal verbs directly associated with "cosmic background radiation," but you might encounter phrases like "the fabric of the universe" when discussing related concepts.

Noun
  1. (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin

Synonyms

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