If we could bend gravity enough in the “opposite” direction (eg “negative energy” if such a thing even exists), and we could somehow manipulate magnetic fields

If we could bend gravity enough in the “opposite” direction (eg “negative energy” if such a thing even exists), and we could somehow manipulate magnetic fields enough to get all close and personal to neutron stars without getting sphaghettified and somehow could sample their inner core and see whether they are made of strange matter.. well we’d have an answer. But this for example is so freakishly absurd that it seems impossible even for scifi. A type 3 civ, if it exists, could potentially do that; but it’s one thing to extract energy off stars, type 2 and 3 and another thing to manipulate the inner core of neutron stars.