an Earth-type planet
Associated chiefly with the US TV series Star Trek.
You will confine your landings and contacts to Class ‘M’ planets, approximating Earth-Mars conditions.
Strategically it was the only Class M planet in the disputed zone.
The planet he was referring to is a class M one.
‘She’s class-M’, Lieutenant Lynch said of the red-orange world depicted on their main viewscreen.
The next nearest habitable Class-M planet is two light-years away, in the middle of the Neutral Zone.
Ben Ostrowsky submitted a 2021 cite from a Star Trek novel by James Swallow.
Last modified 2021-02-01 21:50:42
In the compilation of some entries, HDSF has drawn extensively on corresponding entries in OED.