# How deep can the Death Star's superlaser reach with a single reactor ignition?

Related but not the same: What's the radius of the explosion caused by a single reactor ignition of the Death Star superlaser?

The Death Star can shoot at targets with a "single reactor ignition" when there's no intent to blow up the planet in the process. While the linked question asks about the radius of the resultant explosion on the surface (which never received a conclusive answer anyway), I want to know how deep the superlaser can reach at this reduced level of power.

Given that the Death Star's superlaser can reach a planet's core at full power, how deep into the planet can it reach when fired with only a single reactor ignition?

Note: The deepest penetration is probably when the Death Star fires from directly overhead (perpendicular to the surface) as at Jedha, rather than any angled shot like the one at Scarif.

• My opinion: Both questions I assume would rely on how long the blast was held and the density of the planet. With unlimited power even a single core blast could envelope a planet. As far as how deep it could puncture it would depend on the density of the planet, but again I think it is safe to say it would eventually reach the core on its own like a drill. I think the correct question is how much energy is released from each core per second... but that has never been addressed as far as I know. With that information you could calculate anything. Jul 30, 2017 at 18:51
• That appears to be unanswerable. We see some surface effects but never the final state of the blast zone. What's going on underground is anyone's guess. As a first-order estimate, we could assume spherical shape of the affected volume of planetary matter, in which case depth equals the radius of the surface blast. Attempt at estimating the latter is in the linked question. Aug 2, 2017 at 19:27
• while the question is posed as seeking an in-universe answer, short of very specific in-universe canon evidence, any answer will flirt with real-world physics and quickly make this drift towards off-topic Aug 2, 2017 at 19:29
• It can reach exactly 1.95 plotmeters. Aug 2, 2017 at 21:49