what’s the definition of dark matter?
energy that humans cannot observe directly
energy that has a small effect on the universe
energy characterized by black and dark gray colors
energy that is only emitted by glowing nebulae
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Dark matter refers to a hypothetical form of matter that does not interact with electromagnetic radiation, making it invisible and unable to be directly observed. It is called "dark" because it does not emit, absorb, or reflect light, and therefore cannot be detected using traditional astronomical methods. Yet, it exerts a gravitational influence on visible matter, contributing to the structure and dynamics of the universe at large scales. Dark matter is believed to make up a significant portion of the total matter in the universe, but its exact nature and composition remain unknown.
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