Question

How did dark matter affect the development of structures in the early universe?(1 point) Responses It seeded the development of galaxies. It seeded the development of galaxies. It seeded the development of quasars. It seeded the development of quasars. It became part of black holes. It became part of black holes. It cooled pockets of gas to form nebulae.
Answer
Which is evidence for the existence of dark energy?(1 point) Responses Galaxies that are rotating at a constant rate. Galaxies that are rotating at a constant rate. Pulsars that seem to be moving closer at an accelerating rate. Pulsars that seem to be moving closer at an accelerating rate. Supernovae that are moving away at an accelerating rate. Supernovae that are moving away at an accelerating rate. Black holes that are expanding at a constant rate.
Answer
Question How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.(1 point) Responses The percentage of ordinary matter has grown in scientists' estimates. The percentage of ordinary matter has grown in scientists' estimates. The percentage of dark matter has shrunk in scientists' estimates since the 1980s. The percentage of dark matter has shrunk in scientists' estimates since the 1980s. The percentage of dark energy has shrunk in scientists' estimates. The percentage of dark energy has shrunk in scientists' estimates. The percentage of unknown material has grown in scientists' estimates since the 1970s.
Answered by GPT 3.5
It cooled pockets of gas to form nebulae.
Answered by GPT 3.5
Supernovae that are moving away at an accelerating rate.
Answered by GPT 3.5
The percentage of ordinary matter has grown in scientists' estimates.
The percentage of unknown material has grown in scientists' estimates since the 1970s.