- Dear Houston, Christopher Walken here. We got a problem. I don't know if I should
dance on the Moon. Okay, well Christoper Walken has never actually walked on the Moon, but only a handful of human
beings ever actually have. And because of that, we know the surface of
the Moon pretty well. I mean, we look up at the
night sky right at it. Look at that, beautiful. What's inside the Moon, however,
remains hidden from view. Various theories about
what's under the surface may have been developed, some
funny, some conspiratorial, and some through hard scientific work. Are you interested 'cause I know I am? Lets dive into it. (mysterious music) Here are 10 Theories About
What's Inside the Moon. Number 10 is water. When we see pictures of Earth, we see all the abundance
of life around the globe, and where there's life there's water. It's long been assumed that the Moon is a barren rock in comparison. However, a recent theory suggests that it may not quite be as
barren as we once thought. In fact, under its surface there may actually be water of a kind. By analyzing Moon rocks brought back from the Apollo 17 mission, scientists have interpreted this data to suggest that there
might indeed be water held within the rocks deep
underneath the surface. This new theory suggests that
there is 100 times more water than anyone else thought possible. This is great news for future
settlements there, if true. Plus living on the Moon is thirsty work. Number nine is the
strange thickness anomaly. Yes, the strange thickness
anomaly, not to be confused with the Instagram models that you follow. You'll notice in this list that there are some wildly speculative
theories about the Moon. However, what's fascinating
is that even NASA scientists accept that there are some strange things going on underground. For example, there seems to be an anomaly about how the surface of the
Moon varies in thickness. If this is true, it appears
that the side facing the Earth has a thinner surface covering
whatever lies underneath. Researchers are still trying
to figure out why this is and what exactly it means
for what's inside the Moon. There are certainly tidal forces going on. So one theory is that the
gravitational pull of the Earth is pulling at the denser side of the Moon, compressing the thickness of
the crust on its visible side. One thing's for sure, we will only know what this dense material is for certain if we go back there and drill down. Boy, that sounds exciting. Hold on, let me get my spacesuit. Number eight is another planet. Current theories about how
a planet develops its moons suggests that they often
form from the same materials which created the planet
in the first place. However, there's one more
theory about the Moon's origin which casts doubt on this idea. It also suggests that there
may be something spectacular underneath the Moon's surface. The Moon itself may have been
the product of another planet. Imagine two other planets colliding and throwing out fragments of themselves into the surrounding Solar System. It's possible that the
Moon was then captured by the Earth's gravitational pull. So, in essence, what's underneath the Moon may be evidence of a planet
that's now no longer existing. This would support theories
that, in its infancy, the Solar System may have
had many more planets. It really was an overcrowded
place back to the day, anyway, so someone had to go. Not Pluto, though. Pluto is still a planet, I
don't care what they say. I love Pluto. Number seven is layers. Through what we know about
Earth's internal construction, theories have been built up to
explain the Moon's internals using what we see on our own planet. This has been combined
with analysis of Moon rocks brought back during the Apollo missions. Putting all this together,
a popular theory is that, like Earth, the Moon can
be broken down into layers. This involves the crust,
which is what we see when looking at the Moon,
followed by many kilometers of a mantle made of metal
elements, and finally a core, which measures about
700 kilometers across. This core is far denser than other layers, but scientists are only
able to speculate largely about what that core is made out of. In this way, then, the
Moon is like an onion that can be peeled layer by layer. But, if you do that, make
sure you keep a metal spoon on your tongue 'cause
that way you won't cry. That's a little bonus fact for you. It really works. Number six are alien materials. As we've already seen,
theories about how the Moon was created often inform us
as to what's going on inside. However, none of these theories have been truly confirmed
with great confidence. For this reason, then, people
speculate about the formation of the Moon and the
resulting interior of it. One fascinating theory
is that the Moon itself did not come from our Solar System, but that it may have
originated somewhere else. It then entered our Solar System and settled alongside Earth. The reason the surface of the Moon appears to be made of the same
stuff as our Solar System could be because of all the
asteroids and other materials which impacted the Moon
throughout its history. If this is true, what's inside the Moon may be alien materials
from another star system or new elements with amazing properties that science has yet to discover. Cheese, it's made of cheese. Call now, right now, in this video. Gonna look back on it in a few years. They're gonna know, the
Moon's made of cheese. Mm, cheese. Number five is iron. Many scientists have put forward a theory that the core of the Moon
is made of iron and nickel. This would explain why the Moon
has an electromagnetic field generated by its metal core. However, one problem with this theory is that the magnetic field of
the Moon is extremely weak. In fact, some believe
that the vast majority of this weak field is
generated by metal particles within the crust of the
Moon and not its core. Either way, it appears likely that there is a substantial amount of metal resources, including iron, either just under the Moon's
surface or much deeper. It could be mined for profit in the future without causing environmental
damage, as it does on Earth. See, folks, space travel could save us all unless we bump into evil aliens. Just go ahead and hold that thought. Number four are tunnels. Although the Moon could be humanity's first permanent settlement off-world, it's an extremely hazardous environment. There are various engineering problems to be overcome when building a Moon base. One suggestion is that the
solution to these problems will come from what's beneath the surface. At some point, lava
flowed there underground. It's been speculated by many that there may be lava tubes left behind. These massive tunnels and caverns are formed when the outside
of a lava flow cools creating a hard surface. Once the lava inside drains
away, a large space is left. With no real atmosphere to speak of, the Moon is not protected from
impacts and cosmic radiation the way that we are on Earth. If we built settlements
inside these lava tunnels, we would be safe, unless
there are Morlocks down there. That would be unfortunate. Number three is Earth's twin. One day a scientific theory is popular, then it seems silly,
then it's popular again. That's just how science sometimes works because theories become more popular depending on the evidence
we have at the time. One theory which is often laughed at was formulated by Charles
Darwin's son, George Darwin. He believed that the Earth
itself ejected the Moon out as if it was giving birth to it. Mama, I come out now, mmm, Moon. He believes that the Earth in its infancy was spinning so fast that
a piece of it broke off. Therefore, underneath the Moon you would actually find
a piece of Earth itself. Although still controversial,
in 2010 there was a study that suggested that a
natural nuclear explosion could have occurred on our planet which gave birth to the Moon. Aw, it's a little baby Moon. Dear God, imagine the size of the diapers. Moon poopie. Number two is the unexplained mass. Okay, there was a lot of time
spent researching strange and unusual bizarre topics for you guys, but what really amazes me is when science crosses over into the world and suggests that there really is something
truly bizarre out there. This is the case with one theory about what's inside the Moon. In June of 2019, scientists discovered that there is something
hidden deep inside the Moon, but no one is sure what it is. Underneath an ancient impact
crater 2,000 kilometers wide there's an unexplained mass. Various theories are
exploring what that is. Some believe it to be
the core of an object which crashed into the Moon
and burrowed deep underneath. Another is that a previously
undiscovered phenomenon took place after the impact, where the resulting magma pooled together in one blob for some reason. Whatever the truth is, it's these sort of
scientifically verified mysteries that I live for. And number one is a spaceship. I know, I know, just hear me out. Those who are familiar with
the Hollow Earth theory might think they know where this is going, but Hollow Moon theory
doesn't just suggest that there's a hollow
space inside the Moon. It suggests that the Moon
itself might be a spaceship. Yeah, I bet you didn't see that comin'. What's great about this theory is that, while there's no evidence yet
of aliens inside the Moon, there is some data which suggests the idea of a hollow void inside the Moon. During the Apollo missions,
the way the Moon vibrates was measured when Apollo 12 deliberately crashed an unmanned
module into the surface. The Moon was described
as ringing like a bell in the immediate aftermath,
which some believe shows that there's a
giant space inside there. But, hey, who knows what it's filled with. Cheese, it's filled with
cheese, nacho cheese. Sorry, I'm very hungry, I'm
gonna go eat some cheese. But, as always, thank
you so much for watching, for liking this video and, of course, for subscribing to my channel. And a very special thank you
to all of my channel members, especially the names you see
on your screen right now. Every single one of you
helps keep my channel going. Thanks again and I'll
see you in the next time.