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Roughly 3K, close to the temperature of liquid hydrogen. It was billions of K when it first escaped following the Big Bang roughly 13 billion years ago, but the universe expanded and cooledas well as Doppler red shifted it until it looks very cold now.
About 2.725 Kelvin.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoThe measurement suggest that the Universe in the beginning was quite dense and hot (around 3,000 Kelvin), having now a temperature around three Kelvin above absolute zero. The measurements employed generally today are those of 2.728 and 2.7281.
James Bond 007
Wiki User
∙ 12y agoRadiation has no temperature. But its distribution over the whole EM spectrum
is a characteristic of body's at a specific tempoerature.
The frequency distribution of the CBR fits the characteristic radiation from a body
at about 3 Kelvins.
Wiki User
∙ 12y agoAbout 2.7 Kelvins
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This theory lost its appeal when astronomers discovered quasars and cosmic background radiation?
In Cosmic Physics for $1000, Alex, "What is the Steady State Universe?"
Why was cosmic background radiation an important discovery?
It is important evidence of the Big Bang.
Is cosmic rays a type of light?
Technically, "cosmic rays" are high-energy particles rather than electromagnetic radiation. So no, they are not a type of light.
The discovery of cosmic microwave background radiation and primordial helium gas was scientific evidence supporting what theory?
The 'big bang' theory.
Are cosmic rays more powerful than gamma?
It's hard to say. Can apples be compared to oranges? Cosmic rays are the "rays" that originate in the cosmos and strike earth. These cosmic "rays" are mostly protons with a few alpha particles and some token electrons. That makes the cosmic "rays" a form of particulate radiation. The gamma rays are the highest frequency (and highest energy) electromagnetic radiation (EMR) there is. This radiation is produced by changes in the nuclei of atoms. The gamma rays have very short wavelengths (and short periods), and they penetrate things well. The particles mentioned don't. Alpha particles have trouble moving through air. Electrons and protons can be stopped by a sheet of aluminum foil. Does that mean the gamma rays are more powerful? You make the call.
Which theory is supported by the evidence of cosmic microwave backround radiation?
The evidence of cosmic microwave background radiation supports the Big Bang theory.
How ia cosmic background radiation related to the big bang theory?
The cosmic background radiation is believed to be the remains of the radiation emitted by the Universe when it started to get transparent - when it had cooled down to a temperature of about 3000 kelvin.
What is the leftover thermal energy from the big bang?
The radiation left over from the big bang is found in the microwave region of the electromagnetic spectrum. As the universe expanded and cooled, the intense hard gamma radiation that existed became radio waves in the low gigahertz region, characteristic of a temperature around 30 Kelvin.
How does cosmic backround radiation differ from the big bang?
Cosmic microwave background radiation was predicted by Big Bang Cosmology about 16 years before the former was discovered -- by accident. The existence, isotropy, and spectrum of CMBR are all exactly as predicted by BBC, and all alternatives to BBC are reduced to stating, "It's just there and there is absolutely no explanation for it."
What is meant by the term background radiation?
Backround radiation is an explosion which occured in space, which consists of radiation comming from all directions in space.
What is investigation 2.7 in science?
I would think it may be related to the temperature of the cosmic background radiation in degrees K.
What are the weaknesses of cosmic background radiation?
the weakness of cosmic back ground radiation as those radiation are left over of big bangs
What does the uniformity of cosmic radiation imply about its source?
The source of cosmic background radiation filled the entire universe.
What are the source of radiation?
Cosmic radiation External terrestrial and internal radiation
Cosmic radiation and radiation from terrestrial sources are examples of?
Natural background radiation
Did cosmic radiation kill the dinosaurs?
no
What is the lowest temperature observed in universe?
The lowest temperature observed in the universe is -272.15 Kelvin in the most coolest place of universe "boomerang nebula " also cosmic background radiation approaches this temperature
