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The cosmic microwave background (CMB) is cold because the expansion of the universe has caused it to cool down over time, even though the early universe was very hot.

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4mo ago

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How is Olbers' paradox resolved in the context of the expanding universe and the presence of cosmic microwave background radiation?

Olbers' paradox is resolved in the context of the expanding universe and the presence of cosmic microwave background radiation by understanding that the universe is not infinite in age or size. The expansion of the universe causes light from distant stars to redshift, making them fainter and cooler, and the cosmic microwave background radiation fills the universe with a uniform glow, accounting for the darkness of the night sky.


What is the leftover thermal energy from the big bang?

The leftover thermal energy from the Big Bang is known as the cosmic microwave background radiation (CMB). It is a faint glow of radiation that permeates the universe and is considered a remnant from the early universe when it was much hotter and denser. The CMB provides important clues about the early universe's properties and evolution.


Where did the cosmic microwave background (CMB) come from and what does it reveal about the early universe?

The cosmic microwave background (CMB) originated from the hot, dense state of the early universe about 13.8 billion years ago. It is the afterglow of the Big Bang and provides crucial information about the early universe, such as its temperature, composition, and density fluctuations. This radiation helps scientists understand the evolution and structure of the universe.


What is cmb?

CMB stands for Cosmic Microwave Background, which refers to the faint radiation left over from the Big Bang. It is the oldest light in the universe and provides important clues about the universe's origin and evolution. Scientists study the CMB to learn more about the composition, age, and structure of the universe.


How long have these microwave photons have been traveling through space?

Microwave photons from the cosmic microwave background radiation have been traveling through space for approximately 13.8 billion years, since the early universe.

Related Questions

The heat left over from the beginning of the universe is?

cosmic microwave background radiation.


When did the Cosmic microwave background began to stream across the universe?

on the Era of Nuclei


How is Olbers' paradox resolved in the context of the expanding universe and the presence of cosmic microwave background radiation?

Olbers' paradox is resolved in the context of the expanding universe and the presence of cosmic microwave background radiation by understanding that the universe is not infinite in age or size. The expansion of the universe causes light from distant stars to redshift, making them fainter and cooler, and the cosmic microwave background radiation fills the universe with a uniform glow, accounting for the darkness of the night sky.


What helped scientist determine the age of the universe?

The redshift of the cosmic microwave background radiation


The heat left over from the beginning of the universe?

The heat left over from the beginning of the universe is known as the cosmic microwave background radiation. It is a faint glow of radiation that permeates the entire universe and is a remnant of the Big Bang. This radiation provides important clues about the early universe and the formation of galaxies.


What does cmb stand for?

Among other things, it means Cosmic Microwave Background.


What is the leftover thermal energy from the big bang?

The leftover thermal energy from the Big Bang is known as the cosmic microwave background radiation (CMB). It is a faint glow of radiation that permeates the universe and is considered a remnant from the early universe when it was much hotter and denser. The CMB provides important clues about the early universe's properties and evolution.


The Doppler shifting of radiation from the early universe has resulted in today's universe being bathed in a sea of?

Cosmic Microwave Background (CMB) Radiation.


Where in the world is Cobe to be found?

COBE or the Cosmic Background Explorer is a satellite which is dedicated to cosmology. It was aimed at investigating cosmic background microwave radiation and help to improve our general understanding of the universe.


Where did the cosmic microwave background (CMB) come from and what does it reveal about the early universe?

The cosmic microwave background (CMB) originated from the hot, dense state of the early universe about 13.8 billion years ago. It is the afterglow of the Big Bang and provides crucial information about the early universe, such as its temperature, composition, and density fluctuations. This radiation helps scientists understand the evolution and structure of the universe.


What is cmb?

CMB stands for Cosmic Microwave Background, which refers to the faint radiation left over from the Big Bang. It is the oldest light in the universe and provides important clues about the universe's origin and evolution. Scientists study the CMB to learn more about the composition, age, and structure of the universe.


Why was the COBE important to the big bang theory?

NASA's COBE (Cosmic Bakground Explorer) satellite was developed to measure the cosmic microwave background radiation from the early Universe to the limits set by our astrophysical environment. The cosmic microwave background radiation is a remnant of the Big Bang. Study of minute temperature variations are linked to slight density variations in the early universe. These variations are believed to have given rise to the structures that populate the universe today: clusters of galaxies, as well as vast, empty regions.