Star Trek
In Star Trek, the Beta Orionis system has been called the Rigel System. This system is home to three species and lies near to the heart of the Federation. A list of known worlds-
1. Rigel 2. "Shore Leave"
2. Rigel 3. "All Good Things..."
3. Rigel 4. "Wolf in the Fold", "Half a Life", "The Wire", "Prodigal Daughter".
4. Rigel 5. "Journey to Babel".
5. Rigel 7. "The Cage", "The Passenger"
6. Rigel 12. "Mudd's Woman"
The new world-
7. Rigel 10. "Broken Bow". Source: TrekToday.
Rigel is accompanied by a pair of class B main sequence stars, at a distance at least 50 times farther than Pluto is from the Sun. Again, B class stars are too short-lived for habitable planets.
My guess would be that the planets they refer to are around other stars (F G or K classes) that are in the general vicinity of the Rigel "neighborhood". The "suburbs" if you will.
It could also be that interstellar travel will give us enough of a triangulation base to reveal that there are actually several stars directly between us and Beta Orionis. Those could be subsequently named "Rigel" as well. That sort of ignorance would require 20th-21st century and earlier astronomy on Trek Earth to be LESS advanced than in the real world, though, even though generally the space technology of Trek is MORE advanced than in the real world.
In any case, I'm all for having each and every one of the Rigel planets be class M. One is pseudo-plausible, two would be stretching it, but we already have confirmation for at least four humanoid-habitable planets. So there must be a *mechanism* behind this, not just random occurrences.
If one doesn't want to believe in artificial planets, then one could say that the star has captured hundreds of planetary bodies in its later days, and a dozen of them inhabit the *very wide* life belt around the star. For some reason, there are no planets inside of the belt (save, perhaps, for Rigel I which so far hasn't been identified as class M), but there could be plenty of dead worlds outside it.
Timo Saloniemi
"It could also be that interstellar travel will give us enough of a triangulation base to reveal that there are actually several stars directly between us and Beta Orionis."
And, somehow, their proper motions are just exactly right to have kept them perfectly aligned ovee the hundreds of years that humans have been studying astronomy? I doubt it.
I've just had a thought... What if some of these planets, rather than being around Beta Orionis, are actually around Alpha Centauri (also known as "Rigil Kentaurus")? This would especially make a hell of a lot more sense for the ENT reference...