• DefinitelyNotAPhone [he/him]
    ·
    3 years ago

    Not saying it's really feasible, but iron poisoning would do it. Just chuck enough iron (read: a few Jupiter-sized masses of iron. This is the bit that's unfeasible) into a main sequence star and you've basically shoved a control rod into a nuclear reactor, except instead of just quietly shutting down it either slows fusion enough to trigger a red giant expansion or just shuts the star's fusion off entirely, resulting in a nova.

    Actually both of these possibilities would also nuke earth in the process, so, uh, teleport it into a black hole?