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How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.(1 point)

Responses

The percentage of dark energy has shrunk in scientists' estimates.
The percentage of dark energy has shrunk 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 unknown material has grown in scientists' estimates since the 1970s.
The percentage of unknown material has grown in scientists' estimates since the 1970s.

The percentage of ordinary matter has grown in scientists' estimates.

1 answer

The two correct answers regarding the changes in scientific understanding about the composition of the universe are:

  1. The percentage of unknown material has grown in scientists' estimates since the 1970s.
  2. The percentage of dark matter has shrunk in scientists' estimates since the 1980s.

These choices reflect the evolving nature of our understanding of the universe's composition, including the recognition of dark energy and dark matter, and the challenges in quantifying these components accurately.