After a certain speed, things stop being able to collide with anything, i'd imagine the bombs were going through the voxels, out the other side, into space, back into the gravity well and through the planet like a neutrino lol.

Has anyone else ever noticed the temperature change to "Inferno" at the center of the Earth? Pretty cool little detail the devs added.

Dr Hayden: You can't just blow a hole into Mars! Doomguy:

You now need to repeat this at other points of the surface to have the holes meet in the centre. You could use this for a hidden planetary transport system.

I wonder if the hole was straight enough, if you could drop the pod with a merge block through the middle of the planet, come out the other side, and then merge back with the starting point? That would be a really cool amusement park ride!

The glass elevator falling through the world is honestly one of the coolest things i've ever seen in this game

next challenge, make it so you can ride through the entire planet, and then get caught on the other side by a merge block, eg, the point where it hits 1m/s a merge block catches the glass elevator

Fun fact: the absolute limit to a numerical value that can be stored in a 32 bit system is 2147483647. When a value exceeds this number it goes all the way around to -2147483647. These rules also apply to the speed of objects in space engineers so when the bombs accelerate to that speed they then suddenly go that same speed in the opposite direction. This is actually a pretty fun effect and You can do this with the speed mod and some fun thruster mods fairly consistently.

Ok. So. Hollow out the center and create a geodesic dome base that floats? Expand it as needed and imagine Obi-Wan Kenobi approaching saying "Moon? Thats no moon." Profit??? :P Very cool vid btw.

The 790 m/s speed at the center was intense. It really puts low earth orbital speed of 8 km/s into perspective. Imagine the tunnel whipping past ten times faster!

I think the reason why the explosives are coming back up through the ground is because they glitched thru the ground went to the other side of the world and then went back up Edit: they might be gaining speed due to floating point precision errors (the bigger the number gets the less precision it has) Edit 2: it also might be because the centre of mass of the earth is not centred to the voxels Edit 3: maybe they are gaining speed by glitching thru the ground

It is impossible to "drop warheads in the same spot", because that "same spot" isn't there after you drop a warhead on it. ;) Pedant mode off, thanks for the video!

A friend of mine and I once tried doing this on a server after we discovered the destructive power of the bomb dropper. It was fun.

What if the elevator had a connector on each end, and a receiver, so you could lock it and drop straight again? Maybe it would fall more straight, and it could transfer ore from one station to another! Asking a lot.... I know, you use a small grid for extra space around you, or a long skinny grid, and you do the initial alignment with atmo thrusters with dampners off, and right exactly when you reach 0m/s put the dampners on, then make your connector station with maybe a piston for fine tuning. No subgrids on the shuttle though, or it will be a problem for sure. '^_^

I have seen some thing like this before, when an object reaches a serten speed the game basically turns that speed negative. Another example of this is nuking Gandy in Civilization.

The 'Glass Elevator' is the highlight of the whole video. It's so incredible. People would pay to see something like that... I've got to start writing now.

28:08 The warheads were going so fast, the collision just doesn't work properly, but after they pass the center, they should slow down, but they will reach the same height on the other side, so it's not that they fell down and hit another one, it's that they slowed down enough that the collision started working again, but still too fast to work reliably. Really good video, always wanted to do this

i recommend staggering the launch time so the warhead that explodes first doesnt blow up the ones before it before they hit the floor and reduce efficiency.

Kinetic devastation mod might help. Accidentally hitting the moon at 300m/s leaves a fairly large crater. Repeated a few times in the same spot would probably yield some results

I've noticed that your temperature gauge has been slowly getting hotter and hotter the closer you get to the center. A nice touch by the devs!

what i think is happening is that instead of exploading the warheads bounce on the voxels in to random directions left or right but go up again because of an enormous speed gain in that one physics interaction. considering that SE isnt intended to have such high speed thats a possability

Going through the hole in the glass chamber was terrifying and gave me a weird chill I wasn't expecting

Dude you should be having millions of views, this is such a great work for our curiosity and space engineers science. Thank you very much for doing this kind of videos, I know it took a lot of time and effort and we appreciate it 😁

Imagine turning this into some sort of fast transport elevator, where at its peak there is something that can grab it safely, then later drop it.

I have never even watched a single space engineers video before this. i know absolutely nothing about the game, but holy crap this looks fun.

To fix the trash collection issue, you could install this on a ship that lowers itself down into the hole so it allways is in range

I'm thinking it's an overflow issue with the speed of the objects.

Once I was bored, me and a mate did a little homing missile thing with warheads, a battery, a thruster with max override, and a H2 tank. We'd just paste those m0f0s in. We dug a tunnel across the moon like that, but likely missed the center

Most excellent episode. problem solving was on point too

That's one cool ride at the end. Now I gotta try this

It was already cool boring to the other side of the planet, but then the glass craft was a brilliant idea and I loved it

When I first started playing online this was my plan to make a base in the center digging this exact way but I never ended up building it it's so cool that you're doing it instead so I can see if it works

That was one of the darndest things I've ever seen. Props to you...well done.

I always loved this idea, and really want there to be a planet variant that is the ruins of an ancient civilization, and to get from one side of the planet to the other the fastest way, you just go through the center. I really want some form of science fiction media to do it too.

another explanation besides pure speed is an explosion bounce/clang....ie some pass through the voxels out the other side then on way back through they get a bounce boost, explains why only some make it back....its more about drop timings

"What goes up must come down, therefore what goes down must come up." - Newton, probably

Id love to see this done on Pertam. No idea what for but Im sure we can find some kind of use for a hole to the center of Pertam

Love this series!!!

This was the coolest thing I ever got to see in SE

In a realistic setting, wouldn’t the tunnel naturally curve do to the rotation of the earth, like a pendulum.

The elevator scene reminded me of the 2012 Total Recall Remake, with that Tram that goes all the way through to the other side of the planet.

I see that space engineers does not only violate the laws of thermodynamics, it also violates conservation of energy period.

That was awesome. Never heard of this game but I'm certainly checking it out now. Thank you

i believe the reason they’re gaining speed on the way back out of the earth is that many collision physics engines have no way to resolve two objects occupying the same space other than just pushing the two objects aparts, so it’s like a balloon underwater.

I haven't played SE in years but this got me interested again.

dude this is so awesome, it just inspired me to make a base based on total recall and this. sooooooo cooooool

"There's a chance of explosion. It has happened twice in the past, but only two times in a history of two hours of operation, so I think that's pretty good odds." Space Engineers odds? Sure, that's good. IRL? Not so much. I imagine driving for two hours and only having a couple fender benders...

Love blowing things up. This game is a lot of fun.

I loved the video. And i loved the fact you gave the epilepsy warning after 5 minutes and 30 seconds after staring straight into flashing explosions. Almost dodged it but still had a seizure. Keep up the great video content😂

Pretty sure if I saw walked up onto this on a multiplayer server I'd know EXACTLY what's going on lol.

I was so relaxed them boom the 2nd exsplosion

Space Engineers is a FANTASTIC game!

This is a good way to create shortcuts between your earth bases.

I would love to see this turned into a transportation method, the pod goes in one side and comes out the other however at the point where it starts to drop again you could have a connector block to catch it and send it back when required. Great video btw

I've been looking for a video like this for 2 years now

Make the tunnel properly aligned. build gravity elevator / catch system for transfer through the core

Very nice!

That crash at the end gave me such a heart attack lol

Love your videos

This was so cool

You do not need a mod to reach the other side of the planet. what you do need is thrust. After you reached the center of the planet. What you need to do is to fit a battery, timer and a Thruster to your Warhead.

Since the Did you know? series isn't being continued, I'm giving you a tip that might've been helpful. You can use ctrl+z on any grid to activate relative dampeners.

Is there a smaller video of the second pass through? would love it as a wallpaper. Also looking forward to making multiple clang guns and trying some things out.

For the glass box, you should put a connector at the top and bottom of the craft, as well as a timer block and a battery, that way you can disconnect from one station, fly thru the planet, then reconnect to to a station on the other side automatically like an elevator.

If you ever feel like adding to this playlist here's an idea. Do some testing to find out which is more effective as an explosive, hydrogen tanks or warheads. You could even implement the new automation into it and attempt to make some missiles

THIS IS DOPE!

FYI, the problem isn't that the hole isn't straight. The problem is that, as a player, you slightly influence the motion of objects when you bump into them. So when you were walking in the craft and you bumped into a wall, you created an imperceptible drift that, over hundreds of kilometers, eventually resulted in you colliding with the side of the hole. You really needed to create a button to turn off the merge block so to avoid unnecessary movements.

I just thought about something If you built a indestructible sphere at the center of the earth with you inside of it, would gravity crush you ? Would you be in 0g ? Would you fall on the surface of the sphere ?

Very cool

My theory about why the bombs are not all exploding at the end of the hole is that the terrain is updating from one explosion while another bomb is flying through. Then once they've passed where the "ground" was supposed to be there is nothing to collide with. Your theory about them colliding with each other is sound and that seems to explain the "islands" past the bottom. You probably hit the side because there probably isn't any way something would come to a rest and reverse itself without following a parabolic path, especially if there is drag modeling (even if the terminal velocity is off). Your little elevator ship probably shifted slightly as it came closer to the crest of its movement.

A perfect example of the lengths I would go to, to get some damn peace and quiet, and space, and privacy, to not have neighbors around, or other people. I would happily build a base down here

actually that was pleasant to watch

Explosives revolutionized modern mining too! XD

11:11 those explosions effects seems out of a psychological terror movie

Haha, what a wheeze. I feel like there should have been a Homer voice in the background saying "In this channel, we obey the laws of thermodynamics!" :o)

I think what is happening is the warheads are traveling together at a speed that is so great, that when they reach the bottom of the hole the one that is slightly further down explodes, but the game isnt fast enough at generating the new voxels, so the 2nd and possibly 3rd warhead just travel through what is, for only a small amount of time, a gap in the ground. if you look closely at the time lapse 18:50, you can kind of see the slight gaps in the frames between the explosion and the generation of the new voxels

Oh my. You have no idea the brain storm this video sparked in me. I already knew about the rubberband effect, i thought planets were solid core though.

Awesome!

I did the same thing not to long ago. The warheads disappeared after a few kilometers but i found that using spectator cam to stay near the bottom of the hold being blasted fixed the issue until i got about 40 kilometers down. There i had to rebuild my rig because no matter what i did the warheads despawned. The one thing that caught me off guard was that the center of the planets is hollow.

That crash at the end made me jump, I was so memorized by the journey 😂

Guns work because there is only one way for the gases to escape. You basically just created a massive gun barrel and when one of the warheads blows up at the bottom the explosion is yeeting all of the warheads that where near the bottom up to the surface. Since you have the max speed thing on that game can’t handle it so it goes through the voxel mesh.

beautiful

If I'm not mistaken, SE uses a simplified gravity system, the equations are not the same to real life (I believe the biggest "issue" is that they don't square the radius in some instances) and so it could be possible that the warheads that went through the terrain came back with greater speed.

Make a elevator that use this mechanic, so make a hole through the earth and add ur little thing to fall through the earth and then with connectors, where it changes the way ur falling u attach so you can get out

the warhead dropper is like a drill *but better*

Heres my guess, so, collision boxes in most games deactivate if a object isn't near them to save resources, so, my guess is the bombs are going so fast that the Ccollision boxes don't have time to activate so the bomb clips through, the game then sees that it's under ground, and so sends it to the surface at a set velocity, you can see that they're staying at the same speed on the way up, instead of accelerating or decelerating which makes sense because If it accelerated constantly it could get stuck both in the ground and under an object, causing it to build endless amounts of speed speed, and if it decelerate it could fall back to the center, causing more physics calculations, and so if lots of objects got stuck like this by someone doing this but with blocks, it could be a major source of lag. I'm not sober so sorry if that doesn't make much sense

My thoughts on why they're coming back up so quickly could be that they're trying to get unstuck from the voxels and the fastest way must be up! Only reason why I think this is because of how old (like... 2015 old?) item elevators in Minecraft worked, since I think that game also uses voxels, if you could get an item stuck inside of a block it would propel itself upwards until it hit air so I imagine something similar happens in Space Engineers

I now have a new favorite way to borehole a planet!

Probably integer overflow. Because of how computers store integers, if they get too high sometimes they can just go to the lowest possible value that data type stores.

Awesome! I wonder if you could add a diving board high above the hole!

For a next episode you could try and see how much speed/weight/force is needed to damage/break a block. I really need an answer to this question so can you please do it :)

Physics in real life is continuous but physics in a video game is discrete - that is, something like distance traveled compared to acceleration is a function that works step by step. As such, the effective result if distance traveled as a function of acceleration is a double integral - when calculated discretely, in flat amounts of distance changing frame by frame depending on velocity, and velocity changing frame by frame depending on acceleration - it's very easy for error to accumulate. This is why when physics is done with a non-fixed time step, it can result in non-deterministic behavior, even with no collisions. The amount of error building up over such a large amount of distance is most likely the culprit as to why the objects are coming back up, further than where they dropped, after phasing through because of the mentioned issue where fast enough objects will phase through the voxel geometry. The error generated by this phenomenon would be higher than that caused by floating point precision issues. However I don't have an explanation for why they seem to be coming up at different locations - floating point precision issues could still be partly involved.

Upon viewing your Timelapse around 19:00, it seems like some of them are making contact and exploding, but similar to when one of them blew up near you, they’re being glitched out and flung through the ground/to the surface

About what happened around 17:10. Since SE isn't very good at handling high speed, the speed limit is there for a good reason. Since you've disabled that limit, you'll eventually find that your warheads are traveling at a game engine breaking speeds. When an object like that collides with the ground, just about anything can happen. Apparently the warheads are going so fast that they've unlocked the ability to glitch through solid objects. You can also do that with space ships. If you're flying fast enough, you no longer need to dodge meteors. But why do the warheads still have so much speed when they reach the surface? Just a guess: it's a rounding error that causes energy not to be conserved. It takes a while for the object to fall, and during that time the speed is calculated one step at a time and the result is always rounded to whatever precision SE uses internally for these things. With enough steps like that, the rounding errors begin to accumulate and eventually you end up breaking not just the engine, but the laws of physics too.

To create a continuous hole through the planet without modding the maximum speed, you can first make a hole to the center with a warhead mining contraption, then create GPS markers at the hole's entrance and planetary center, and then create another warhead mining contraption at the opposite side of the planet, locating the best position on the surface by lining up the created markers with the one at the planet's center being closer.

A possible fix for stoping the clipping issue: Build another outpost exactly like this but halfway to the center of the earth Or: Build slowdown rings using artificial gravity generators pointing upwards to slow down the bombs The plus of the second method is, that you can use the same rings but reversed when you go past the center of the earth (which might allow for a 100% vanilla setup for this project) Basically going like this: (Schematics might not work on mobile) _ < initial point of entry | | -| |- (gravity generator ring pointing this way /\) | | >| ○ |< center of the planet | | -| |- (gravity generator ring pointing \/) | | EXIT HOLE

Clang is amused by your talk of physics.

I have a space busters suggestion/question: What happens if you take a planet and remove ALL voxels? Does a gravity well still exist? Mining all voxels of a planet in survival would just be impractical, but technically possible.

If you did manage to bore to the center of the earth like this in a few different places you could use it as a fast-travel network to cross the earth in minimal time.

If you timed it perfectly, and i mean like PERFECTLY, You could set up a contraption that catches and drops you on either end, effectively making the fastest/longest free falling elevator