These names came up in my mind which are more about a story driven space engine. Like people from earth unite to discover and explore new worlds to live in. Or some military orientated space ship named USS Aldebaren (like Star Trek's Enterprise e.g.) that the upcoming game could be all about.
All in all it really depends in which direction the game is going actually. IMHO i prefer short phrases like INTO ETERNITY or latin words with some meaning about the 'mission or motivation' the player has. BTW naming the game after the mothership players control is easy and could work very well. And the dev-team is relatively free to choose a name for it. This also gives the player something to have a relationship with (for example the Normandy in Mass Effect...man everyone who played it, actual loved that ship!)
Also by creating a name it is very good to find one with 'good-to-read/spell' capitals. Like 'Into Eternity' for example: IE. Simple, unique, like SE for Space Engine. Everyone involved knows what you talk about. Players prefer short cuts to make communication easier and it additionally gives the creator the possibility to make up longer titles.
Thats why I would not take 'SPACE' as the name for the game, even I like the idea because of its strong simplicity.
PS: sorry for my mediocre english, i am not a native speaker.
“As for me, I am tormented with an everlasting itch for things remote. I love to sail forbidden seas, and land on barbarous coasts.”