Percy Greg:
Science Fiction Technology and Ideas
Percy Greg (1836-1889) was an English writer; he was mostly concerned with politics.
Invention/Technology Source Work (Publication Date)

Apergy (Apergion) - antigravity substance
An antigravity substance with sufficient power to propel a space ship from the Earth to Mars.

Across the Zodiac (1880)

Astronaut (Ship)
The first instance of this phrase, it denotes a space-going vessel.

Across the Zodiac (1880)


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