Assertion: dark matter | /r/HasProperty | needed
Facets:
Source sentences:
text: Dark Matter is also needed for gravity to amplify the observed small fluctuations in the Cosmic Microwave Background to form the large-scale structure that we observe today.
text: In addition, dark matter is necessary to make a large number of special items and devices.
text: Dark matter is needed to form stars and galaxies in the big bang theory.