tixterkpmg wrote:
Dark matter along with black holes, a region of space from which nothing can escape, ***estimated to*** contain three fourths of mass of the universe.
A estimated to
B is estimated to
C estimated by some to
D some astronomers estimate they
E as estimated by astronomers to
Dark matter along with black holes ,a region of space from which nothing can escape, is estimated to contain three fourths of mass of the universe.
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