Some potential MACHOs (massive compact halo objects) emit radiation. Why are they nevertheless considered dark matter?
A) They are not as bright as a normal star and hence are not visible across great distances of space.
B) They do not emit light in the visible wavelength range.
C) They emit radiation only in the form of particles of dark matter.
D) They are made of particles of dark matter that release some radiation.
Correct Answer:
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