Synonyms for «much mass»

Synonyms for individual words can be found below.

These objects contain millions or even billions of times as much mass as our sun. (sciencemag.org)
After inflation there was so much mass so close together that gravity dominated and the expansion slowed. (discovermagazine.com)
No normal planet could pack so much mass into such a small space. (discovermagazine.com)
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