cube137 said:
What other movies do you know and what method did they use to destroy a planet? What would be the most feasible or plausible?
Rubidium_71 said:
The Vorlons and Shadows on Babylon 5 had their own impressive planet-killers as well.
David Reeves said:
There is a Star Trek episode about matter and antimatter, which involves possibly destroying the universe.
rkolter said:
Destroying a planet is not as easy as the movies make it out to be. Pretty much they have to rely on some highly futuristic science to get the job done. The difficulty is that planets are massive.
Just to weave all this together - in terms of "what would be the most plausible," writers for sci fi TV or movies don't worry much about plausibility. So in this case, what writers find most difficult about planet-destroyers, I'd argue, is when & how to fit such an overly big weapon into the plot - i.e. by what means can its readiness to fire be plausibly delayed? Otherwise, "bang!" - the credits are scrolling much too soon.
Straczynski and the other
Bab 5 writers pretty much never bothered to give "plausible" tech to the planet killers; the motto of that show being, "Never let tech get in the way of the story." The logic of the Vorlon version seemed to be "make it a really really really really big version of the normal Vorlon ship that can shoot a laser-like beam", while the Shadow version involved shooting a zillion torpedoes at a planet; these supposedly burrowed down to the planet core before exploding. And the way these killers were slowed down was to require that they traveled w/ other ships in really big fleets that were slow to arrive at any particular solar system, so the good guys had time to fight back.
Interestingly, in the original
Star Trek TV episode "
Operation: Annihilate!", bright light was used to destroy an invasion of "puppet master"-style parasites; but when sci fi writer James Blish wrote up this episode as part of a collection, he changed the ending to having the Enterprise track the creatures to their home world, after which a single photon torpedo was then used to blow up the planet. Apparently Blish wanted photon torpedoes to be really,
really powerful; but he was the exception among
Trek writers of any sort.
@rkolter makes a good point that destroying planets would be hard work. But then, others have made the point that even getting out into space in a serious way (e.g. colonizing Mars as a first step) would also be much harder work than most science fiction has been willing to admit. But again I don't think this is a stumbling block for writers; they are issued special keyboards that have an "Ignore" button to the right of the Return button. Again, in my view, the real problem with planet killers of any sort is that story-wise, they are just too powerful, so they have to be throttled back one way or another. In a way they're just big
MacGuffins - they drive the action by providing a focus for the good guys to fight back against, but they're not that interesting otherwise.