Which is a characteristic of dark matter? *
1 point
a. it does not interact with baryonic matter
b. it has not been observed directly.
c. it interacts with electromagnetic radiation.
ehumans can see it
a. it does not interact with baryonic matter
The correct answer is a. it does not interact with baryonic matter.
Dark matter is a hypothetical form of matter that is thought to make up a significant portion of the universe's mass. It does not interact with baryonic matter, which is the ordinary matter made up of protons, neutrons, and electrons that we are familiar with.
To arrive at this answer, you can eliminate options b and c by understanding the characteristics of dark matter. Dark matter does not emit, absorb, or reflect electromagnetic radiation, which makes it challenging to directly observe. Astronomers infer the existence of dark matter based on its gravitational effects on visible matter, such as the movement of stars and galaxies. This lack of interaction with electromagnetic radiation also means that humans cannot see dark matter, as mentioned in option e. Therefore, option a is the correct characteristic of dark matter.