Assertion: nebula's cloud | /r/Synonym | nebula
Facets:
Source sentences:
text: The solar system began as a cloud of gas called a nebula.
text: A cloud of dust and gas, also known as a nebula , becomes a protostar, which goes on to become a main sequence star.
text: On a clear, dark summer night earth-based observers can see these glowing clouds, called nebulae, scattered along the track of the Milky Way.
text: Stars are born inside clouds of gas and dust known as nebulas which exist throughout the galaxy.