1) How can neutronium even exist except in space? On a planet, it would drop right to the core, wouldn't it? 2) The only reason to go to maximum warp before hitting a planet or Borg Cube would be so you can't be stopped. "Nothing" can go faster than light. The minute you hit, you aren't going faster anymore and I would think the impact is subject to .999+ of the speed of light. You're not getting extra oomph by going faster than light. Besides, no explosion can be greater than the amount of mass converted to energy, and a shuttle going .999999 of C is going to knock the planet out of orbit and shear off the atmospheres of nearby planets. Question: How big an explosion would the entire mass of the Earth converted to energy be? 3) How would red matter even work? You can't make a singularity out of nothing that would have any kind of effect. I guess you can pseudoscience handwave making Vulcan collapse on itself (somehow), but that's not going to make a black hole any bigger than a thimble is it? And the Narada isn't planet sized. It should have collapsed in the blink of an eye.