Solarian

He grinned at the profanity that came out of the communicator-speaker. Then—back at the irreverently nicknamed Galloping Cow which was the base ship of the Extra-Solarian Research Institute expedition to this star-cluster—McRae cut off.

Source: wiktionary

The Solarian one-man ships were even smaller than the Nigrian one-man ships, and some of these did a tremendous amount of damage.

Source: wiktionary

It will be proved that a Solarian, supposing him to have a stature equal to our own, would do as much work as seven of our cultivators; and yet the Solarians are the happiest of beings; their lot is the highest degree of happiness to which we can aspire until the epoch when there shall exist stars of a more exalted rank, that are not yet to be found in our young universe.

Source: wiktionary

"There has been another dive since our meeting, Jacob, and on that dive, we are told, only the first and more prosaic species of Solarian was observed. Not the second variety which has caused Dr. Kepler so much concern." Jacob was still confused by the hurried explanations Kepler had given of the two types of Sun-creatures so far observed.

Source: wiktionary