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david graham
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Can I confirm that the background radiation is from out of our galaxy?
david graham said:the background radiation
Yes. Very, very far from our galaxy. This is apparent because it travels through the dust in our galaxy, and the radiation is effected as a result. We can also see the impact of far-away galaxy clusters on the CMB radiation (through the https://en.wikipedia.org/wiki/Sunyaev%E2%80%93Zel'dovich_effect]Sunyaev-Zel'dovich[/PLAIN] effect), so it definitely comes from behind them as well.david graham said:Can I confirm that the background radiation is from out of our galaxy?
Chalnoth said:Yes. Very, very far from our galaxy. This is apparent because it travels through the dust in our galaxy, and the radiation is effected as a result. We can also see the impact of far-away galaxy clusters on the CMB radiation (through the https://en.wikipedia.org/wiki/Sunyaev%E2%80%93Zel'dovich_effect]Sunyaev-Zel'dovich[/PLAIN] effect), so it definitely comes from behind them as well.
stoomart said:Would it be accurate to say the CMB we detect today came from outside the galaxy, but CMB originally radiated from all points in the universe, including our own?
Background radiation is a type of radiation that exists everywhere in the universe. It is made up of different types of energy, such as electromagnetic radiation and cosmic rays, that are constantly present in our environment.
Background radiation comes from a variety of sources, both natural and human-made. Natural sources include cosmic radiation from outer space, radioactive elements in the Earth's crust, and radon gas. Human-made sources include nuclear power plants, medical procedures, and nuclear weapons testing.
Background radiation is generally considered to be harmless in small amounts. However, prolonged exposure to high levels of background radiation can increase the risk of health problems, such as cancer. It is important to limit exposure to high levels of background radiation and follow safety guidelines.
Background radiation is measured using units such as millisieverts (mSv) or microsieverts (μSv) per hour. These units measure the amount of radiation absorbed by the body over a certain period of time. Specialized equipment, such as Geiger counters, can be used to measure background radiation levels.
Yes, background radiation can come from beyond our galaxy. Cosmic rays, which are high-energy particles from outer space, contribute to the background radiation on Earth. These cosmic rays can come from sources outside of our galaxy, such as supernovae or black holes.