The phrase "rocky worlds" refers to planets or celestial bodies that are primarily made up of solid rock or a rocky surface, rather than being composed mostly of gas or other materials.
Sentences with «rocky worlds»
We could be looking at a galaxy with a dominance of small rocky worlds. (seeker.com)
If dust and debris make finding rocky worlds challenging, then why search for planets in dusty systems? (sciencedaily.com)
By a further rough calculation, that means the galaxy has held as many as a billion rocky worlds at one time or another. (sciencemag.org)