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Why do we call dark matter dark?


Why do we call dark matter dark?

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Dark matter is a hypothetical form of matter thought to account for approximately 85% of the matter in the universe.

In cosmology and physics, cold dark matter (CDM) is a hypothetical type of dark matter.

Dark matter is stuff we still do not understand yet. That is the reasoning for the term “dark”. Of course, dark matter is seen affecting other galaxies during galactic collisions. Dark matter is “matter” in the sense it has a gravitational effect. By field, if you mean a quantum field then it sort of makes sense.

Why do we call dark matter “dark”? It emits no radiation that we have been able to detect. Although most astronomers assume dark matter really exists, there is at least one other possible explanation for the phenomena attributed to dark matter.

Scientists look at that gas and measure how much there is between galaxies in clusters. By doing this, they discovered that there must be five times more material in the clusters than we can detect. The invisible matter that we can’t detect is called “dark matter.” The Swiss astronomer Fritz Zwicky first used the term “dark matter” in the 1930s.

Answer (1 of 13): “Dark” in the sense that it doesn’t interact with light. Maybe “transparent” would be technically correct. Anyway, the matter is what physicists are familiar with. It’s what they’ve been studying for centuries.

Answer (1 of 4): > If dark matter is aether, It isn’t. The two ideas have virtually nothing in common. * Dark matter isn’t uniform * nor is it everywhere. * It doesn’t act as a medium for light * It isn’t an absolute reference frame > then why do we call it dark matter?

3) Why do we believe 90 percent of the mass of the Milky Way is in the form of dark matter? A) The orbital speeds of stars far from the galactic center are surprisingly high, suggesting that these stars are feeling gravitational effects from unseen matter in the halo.

Why do we call dark matter “dark”? A)It emits no visible light. B)It emits no or very little radiation of any wavelength. … Our view of distant galaxies is sometimes obscured by dark blotches in the sky, and we believe these blotches are dark matter located in the halo.

Why do we call dark matter “dark”? C) It emits no or very little radiation of any wavelength. Why do we believe 90 percent of the mass of the Milky Way is in the form of dark matter? A) The orbital speeds of stars far from the galactic center are surprisingly high, suggesting that these stars are feeling gravitational effects from unseen matter.

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