The reason why scientists called the invisible matter that makes up a fourth of the Universe "Dark Matter" is because
a
Dark matter is the same color as the black backdrop of space, so it cannot be seen
b
Dark matter radiates light on the dark violet portion of the visible spectrum
c
Dark matter does not interact with radiation or light, thus it cannot be seen
d
Dark matter absorbs all light, thus it makes the local space around it darker
c
Dark matter does not interact with radiation or light, thus it cannot be seen
The reason why scientists called the invisible matter that makes up a fourth of the Universe "Dark Matter" is because:
c. Dark matter does not interact with radiation or light, thus it cannot be seen.
The reason why scientists called the invisible matter that makes up a fourth of the Universe "Dark Matter" is because C: Dark matter does not interact with radiation or light, thus it cannot be seen.
Scientists observed that there is a discrepancy between the amount of visible matter in the universe, such as stars and galaxies, and the gravitational effects they observed. They found that there must be additional matter that cannot be detected by light or other forms of radiation. This invisible matter was named "Dark Matter" because it does not emit, absorb, or reflect light like ordinary matter. As a result, it remains invisible and can only be detected indirectly through its gravitational effects on visible objects.