How does weak background radiation coming from every direction in the sky support the Big Bang Theory?
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2 points
it provides evidence of universe contraction
it provides evidence of the universe's increasing mass
it provides evidence of the universe's decreasing mass
it provides evidence of universe expansion
it provides evidence of universe expansion
How does the change in the temperature of the universe provide evidence for universe expansion that supports the Big Bang Theory?
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2 points
The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates.
The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos accumulates.
The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The weak background radiation coming from every direction in the sky supports the Big Bang Theory by providing evidence of universe expansion. This radiation is known as the Cosmic Microwave Background (CMB) radiation and is considered to be a remnant of the early stages of the universe. The Big Bang Theory suggests that the universe originated from an incredibly hot and dense state and has been expanding ever since. The presence of the CMB radiation is consistent with this theory, as it is believed to be the cooled-down and stretched-out remnants of the initial intense heat of the Big Bang.
The weak background radiation coming from every direction in the sky, known as cosmic microwave background radiation, is a crucial piece of evidence that supports the Big Bang Theory. Here's how:
1. It provides evidence of the universe's expansion: According to the Big Bang Theory, the universe originated from a highly compressed and incredibly hot state, commonly referred to as the "Big Bang." As the universe expanded, it cooled down, leading to the formation of atoms. However, before that, the intense heat prevented the formation of stable atoms and caused the universe to be in a plasma state. This primordial plasma emitted high-energy electromagnetic radiation, including photons. As the universe expanded and cooled further, this radiation stretched out, resulting in a shift towards longer wavelengths. Today, this radiation is detected as cosmic microwave background radiation, which is observed across the entire sky. Its isotropic nature supports the idea that the universe has been expanding uniformly in all directions.
2. It does not provide evidence of the universe's contraction: Weak background radiation does not suggest that the universe is contracting. Instead, it supports the prevailing understanding that the universe has been continuously expanding since the Big Bang.
3. It does not provide evidence of the universe's increasing or decreasing mass: The background radiation is not directly linked to the mass of the universe. It primarily provides insight into the early stages of the universe's expansion and the temperature variations that existed at that time.
In summary, the detection of weak background radiation from every direction in the sky, known as cosmic microwave background radiation, is a fundamental piece of evidence for the Big Bang Theory. It supports the notion of a universally expanding universe rather than one that is contracting or experiencing changes in mass.