Re: Planet swallowing Black Holes need to originate in the planet's co
this is not Star Trek but a ramshackle ad-hoc fantasy with random made up inconsistent science thrown in and pinned with the Star Trek label to exploit the Trek crowed and the name of Star Trek.
But random made up inconsistent science has been a staple of Star Trek since TOS!
TOS was based on real-life science to a good degree actually ... even though the canon itself got contradicted on numerous occasions and early on in the show.

I always liked the 'techno-babble' aspect of Trek as it was actually an attempt to explain certain things without having random things happen without explanation whatsoever and it created a mood for me that this IS a technologically developed society with people who know about their stuff and not just a bunch of people who are average users (average users are fine ... but when you are living in a society such as Trek, most people would be well versed to know the basis of the technology they are using and not say 'in English please' all the time).
This new movie's plot holes can be explained away for the most part within the confines of Trek universe without using non-canon 'Countdown' comic anyway ... some of them though REALLY don't make sense though along with the way how humans were portrayed to be so violent all the time.
In essence ... recreating contemporary behavior and people in the future setup ignoring Gene's idea of behaving in a more civilized and rational capacity ... or more mature.
Actually, Pike stroke me as a type of individual who was behaving mostly civilized and rational in comparison to the main cast that ran around and were either shouting and included high degree of emotional outbursts and immaturity (for their ages).
But then again, this sort of behavior attracts the masses because they generally prefer to avoid movies that make them think as most of the people just want to be entertained and get away from a lot of things of real life ... which is understandable ... on the other hand, to say how 'thinking' is a strenuous activity is a tad strange (at least from my POV).
That's why the movie is a success on a large scale and I'm glad it was.
But also, new Trek will have to continue to cater to the masses in order to remain a success, which means less scifi that actually makes a degree of sense and more explosions/action (don't get me wrong ... I don't see why we cannot have BOTH ... as I think we DO miss A LOT of fleet space action in Trek primarily because it was focused on just one ship/crew).
The new movie is enjoyable to see in my opinion ... an interesting way to pass the time, but a tad lacking in some decent scifi aspects.
The red matter ... well, we do know it creates a black hole from when ignited (suggesting it needs a heat source to begin with) ... however, these black holes might contain slightly different properties compared to the ones that already exist in space.
Regarding Nero having to drill all the way to the core of Vulcan and then launch the red matter ... well it DOES make sense to achieve a maximum effect.
That way, the hole is in the center of the planet and just expands in a spherical pattern as it consumes the planet ... but also dissipates after it swallowed up all the relevant matter in it's vicinity maybe due to the properties of red matter itself ... although nothing was stated on screen if there is a black hole where Vulcan was or if it dissipated.
My guess is it dissipated.