I enjoyed the movie, but can someone please explain to me why the Romulans drilled to the core of a planet in order to plant red matter? Afterall, black holes are created later in the film without a planet’s core working as a catalyst. It seems the red matter can work in any conditions: Spock uses it in open space to halt the star’s explosion; and our heroes use it against the Romulans to destroy their ship. So what gives? Why use a drill to penetrate the planet?