Miscellaneous

Does dark matter and dark energy exist?

Does dark matter and dark energy exist?

It turns out that roughly 68\% of the universe is dark energy. Dark matter makes up about 27\%. The rest – everything on Earth, everything ever observed with all of our instruments, all normal matter – adds up to less than 5\% of the universe.

Can math explain the universe?

Math generally plays a vital role in any theory of everything, but contemporary cosmologist Max Tegmark even goes so far as to theorize that the universe itself is made of math. In other words, mathematics no more describes the universe than atoms describe the objects they compose; rather math is the universe.

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Why is dark matter dark?

Dark matter is called dark because it does not appear to interact with the electromagnetic field, which means it does not absorb, reflect or emit electromagnetic radiation, and is therefore difficult to detect.

What are the differences between dark matter and dark energy?

Dark matter produces an attractive force (gravity), while dark energy produces a repulsive force (antigravity). Together, they make up 96 percent of the universe—and we can’t see either. Astronomers know dark matter exists because visible matter doesn’t have enough gravitational muster to hold galaxies together.

How are dark matter and dark energy similar?

In brief, dark matter attracts, dark energy repels. While dark matter pulls matter inward, dark energy pushes it outward. Also, while dark energy shows itself only on the largest cosmic scale, dark matter exerts its influence on individual galaxies as well as the universe at large.

How can we explain the effects of dark matter?

Other scientists think the effects of dark matter could be explained by fundamentally modifying our theories of gravity. According to such ideas, there are multiple forms of gravity, and the large-scale gravity governing galaxies differs from the gravity to which we are accustomed.

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Why can’t we use mathematics to explain the universe?

They’re fundamentally incompatible with one another, and cannot sufficiently explain dark matter, dark energy, or the reason why our Universe is filled with matter and not antimatter, among other puzzles. It’s true that mathematics enables us to quantitatively describe the Universe, it’s an incredibly useful tool when applied properly.

What is dark energy and is it real?

According to one idea, dark energy is a fifth and previously unknown type of fundamental force called quintessence, which fills the universe like a fluid.

Are boundary stars feeling the gravitational force of dark matter?

This puzzling result makes sense if one assumes that the boundary stars are feeling the gravitational effects of an unseen mass — dark matter — in a halo around the galaxy. Dark matter could also explain certain optical illusions that astronomers see in the deep universe.