Which of the following do scientists think might make up dark matter? Select the three correct answers.(2 points)

Question

Responses

gamma rays
gamma rays

spiral galaxies
spiral galaxies

galaxy clusters
galaxy clusters

black holes
black holes

massive compact halo objects
massive compact halo objects

weakly interacting massive particles

Answer 1

Scientists think that the following might make up dark matter:

1. Massive compact halo objects (MACHOs)
2. Weakly interacting massive particles (WIMPs)
3. Black holes

Gamma rays, spiral galaxies, and galaxy clusters are not considered candidates for dark matter itself; instead, they are observations and structures that may help scientists study dark matter's effects.