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jc09
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How can we tell the values of dark matter and mass in the universe when it is say five times its original size?
jc09 said:five times its original size?
jc09 said:How can we tell the values of dark matter and mass in the universe when it is say five times its original size?
Nabeshin said:What do you mean by "original size"?
marcus said:would you be willing to check me on some numbers?
Nabeshin said:Yep, checks out!
marcus said:I probably trust you on numbers and technical detail more than I trust myself, so it's reassuring to hear from you something checks out.
The exact composition of the universe is still a mystery, but we do have some understanding of its major components. According to current theories and observations, the universe is composed of ordinary matter, dark matter, and dark energy.
Ordinary matter, also known as baryonic matter, is the type of matter that we can see and interact with. This includes atoms, which are made up of protons, neutrons, and electrons. Ordinary matter only makes up about 5% of the total mass of the universe.
Dark matter is a type of matter that does not emit or absorb light, making it invisible to telescopes. It is estimated to make up about 27% of the universe's mass. Its presence is inferred through its gravitational effects on visible matter and the structure of the universe.
Dark energy is a mysterious force that is believed to be responsible for the accelerated expansion of the universe. It makes up about 68% of the universe's energy density. Its exact nature is still unknown, but it is thought to be a property of space itself.
As our understanding of physics and the universe continues to evolve, we may eventually have a better understanding of the composition of the universe. However, it is possible that some aspects may always remain a mystery, as there is still much we do not know about the universe and its origins.