Our
planet reveals its deepest secrets not
in jagged mountains or winding rivers,
but in perfect haunting circles etched
into the earth
like ancient runes.
These circles visible from space aren't
just geological curiosities.
They offer a mesmerizing glimpse into
Earth's turbulent past and cultural
history.
holding the keys to cataclysms, lost
civilizations, and the very fabric of
our existence.
But is it just mere coincidence that so
many gargantuan circular structures have
found their home here on planet Earth?
Or is there perhaps something else that
links them together like a prodigious
game of connect the dots?
How can a collection of spherical scars
and whispered legends just appear?
I'm James Stewart and you're watching
Astrome Earth.
For months, I've been scouring Google
Earth to uncover the weirdest circular
formations our planet and in some cases
our solar system is capable of conjuring
up.
In this video, we'll unpack how the
planet's most remarkable circular
wonders came to be. We'll look at how
collectively they tell a story of
Earth's dynamic history.
And we'll assess the possibility that
certain circular formations like
underwater anomalies or patterns in
remote regions could be remnants of lost
civilizations or even linked to
unexplained phenomena.
These circles from space blur the line
between myth and reality. So, join us as
we unravel their mysteries,
beginning with a gigantic eye.
In the early 1960s, humans had only just
reached the final frontier, making it to
outer space for the first time in 1961.
In 1965, just a few years later, the
crew of Gemini 4 departed Florida's Cape
Kennedy Air Force Station on June the
3rd at 10:16 a.m. for a mission that
would last 4 days, 1 hour, 56 minutes,
and 12 seconds.
One of the main objectives for
astronauts James McDivet and Edward
White was to complete the first American
spacew walk, which they did
successfully.
But whilst James and Edward were
floating around, tethered to their
spacecraft by an 8 meter umbilical line,
something was watching them.
Something big and something ancient.
There, in the heart of the vast,
unforgiving Sahara desert appeared a
colossal eye staring up at them from
planet Earth. A weathered sentinel ever
gazing into the abyss of space only
visible from up there. From a distance,
one could argue that humans were never
meant to reach.
The Rishhat structure or the eye of the
Sahara is a mesmerizing nearly perfect
circle spanning 40 km in diameter. Its
swirling rings carved by time itself.
From space, it appeared as a massive
spiral, a fingerprint of the planet's
deep past, etched into the desert sands,
like an ancient mystery waiting to be
unraveled.
This geomorphological wonder is located
in Moritania, 200 km northeast of the
city of Atar, nearing the western border
of the great Sahara Desert. Although
first discovered by French geologists in
the 19th century, it can only be
appreciated in its entirety from space.
The images captured aboard Gemini 4
sparked a scientific frenzy, leading to
numerous studies and expeditions in a
race to uncover its secrets.
In the years that followed, scientists
and explorers alike were baffled by its
eerie symmetry. Multiple theories sprung
up from across the globe. Was it the
scar of a cosmic impact, a gateway to a
lost civilization?
Or something even more enigmatic? The
eye of the Sahara captured the
imagination of people worldwide,
inspiring countless theories and
speculations about its origins and
significance.
Some have even suggested that the
Rishhat structure could be the remnants
of the legendary lost city of Atlantis.
Even today, there are those that still
argue it's one of the above. But
subsequent studies prove the geological
curiosity had a more complex origin
involving terrestrial processes.
Before the first space images,
geologists studying aerial photos
suspected they were dealing with a
meteorite impact site due to its nearly
perfect circular shape, raised outer
perimeter and sunken center.
It wouldn't be for several decades later
that the truth was finally uncovered.
Further geological research disproved
the cosmic impact theory. There just
wasn't enough evidence of melted rock at
the site, which would normally be
present after such an event. That's
according to Michelle Jabra, a professor
at the University of Quebec in Montreal,
who specializes in mineral resources and
who's done multiple studies on the
rishhat.
Thanks to modern geological research,
including satellite imagery provided by
organizations like the NASA Earth
Observatory, scientists now know it to
be an uplifted geologic dome
characterized by layers of sedimentary
rocks that have been exposed over
millions of years by wind and water
erosion.
To uncover its origin, we have to
journey back nearly 200 million years as
the superc continent pangia slowly
begins to break apart.
Whilst North America had long ago
separated from the original pangia, west
and parts of central Africa still
remained, connected to eastern South
America.
Finally, these continents began to drift
apart alongside a major rifting event in
Western Africa known as the Cameroon
line. As the crust tore apart over the
next 15 million years, large faults and
points of weakness began to form,
allowing the hot mantle from below to
escape upwards and fill in the gaps left
by these huge intrusions.
One of these intrusions occurred
underneath what is now known as the eye
of the Sahara, dating back over a 100
million years in the Cretaceous period.
The carbonetite that resulted was thrust
upwards towards the surface, reaching
shallow depths of around 1 kilometer.
This massive body of molten rock pushed
up hundreds of tons of more rock to form
a domeike shape. The formation's
concentric rings are primarily composed
of sedimentary rocks, including
sandstone and limestone. The outer ring
of the structure is composed of harder,
more resistant rock layers, while the
innermost depressions consist of softer
rock layers that have eroded more
rapidly over time.
The eye of the Sahara features an
underlying alkaline ignous complex
including ignous rocks called gabroic
rocks which form as a result of magmatic
activity and hydrothermal alteration.
That's a fancy way of saying that the
earth's material became so hot it turned
into magma or liquid rock and then force
itself into the surrounding rocks slowly
cooling into a crystalline structure.
Erosion both by wind and water has also
helped to sculpt the reshhat structure
into its present form exposing different
rock types and creating its concentric
layers and circular shape. Differential
erosion rates between these softer and
more resistant layers have further
contributed to the striking appearance
of the formation today known as Questas.
[Music]
As if that geological journey across
millennia wasn't exciting enough, it may
not be just rocks that work within this
beauty. Some archaeologists suggest
there is evidence that the rehat
structure was inhabited by early humans.
Archaeological research has revealed
evidence of human activity with numerous
deposits of pre-atulian and Achilan
artifacts characterized by the
distinctive oval and pear-shaped hand
axes normally associated with Homo
erectus and derive species such as
Homohidal Burkensis.
What then of Atlantis? Humans once
inhabited this structure. Does that mean
there's something more to uncover?
The legend of Atlantis, a mythical lost
city or island, has captured the
imagination of people for centuries.
The earliest known written account of
Atlantis comes from the ancient Greek
philosopher Plato in and around 360 BCE.
According to Plato, Atlantis was a large
island located beyond the pillars of
Hercules, the modern-day straight of
Gibralta in the Atlantic Ocean.
He described Atlantis as a powerful and
advanced civilization that existed
approximately 9,000 years before his
time. The island was said to be ruled by
a confederation of kings and was rich in
natural resources with a thriving
economy and a strong military.
Plato's account of Atlantis includes
detailed descriptions of its geography.
It was supposedly located on a central
hill with concentric rings of walls and
canals radiating outward. That does
sound familiar, doesn't it? Rings of
alterating heights, walls, and water.
You can see why there are droves of
articles, documentaries, and videos
suggesting that we may have finally
found this mythical city here with the
eye of the Sahara. Indeed, it does match
Plato's visual description, and you can
forgive the tenuous links, perhaps more
in hope than expectation.
Could the Eye of the Sahara actually be
the doorway hidden in plain sight to
this lost city?
I really don't think so. The existence
of Atlantis has never been proven, and
most scholars consider it to be a work
of fiction or a metaphorical tale.
Indeed, both archaeological and
geological evidence have this one pretty
well. sewn up. But I did enjoy the
story. Miraculously, this isn't the only
giant eye staring back at us from space
on this list. And the next one does
something even weirder. But before that,
we journey toward Johannesburg for the
largest and oldest crater on planet
Earth.
Around two billion years ago, an
asteroid hurtled toward Earth, crashing
into the planet in an area near
present-day Johannesburg in South
Africa. It formed what is today the
biggest and oldest known crater on the
planet.
Up until recently, scientists had widely
accepted that the impact structure known
as the Ephrefort crater was formed by an
object around 15 km in diameter that was
traveling at a velocity of 15 km per
second.
But here's the interesting part. The
world's largest crater is actually
bigger than we first thought. Over the
course of 2 billion years, the Freda
crater has eroded. This makes it
difficult for scientists to directly
estimate the size of the crater at the
time of the original impact and
therefore the size and velocity of the
impactor that formed the crater.
An object that is 15 km in size and
traveling at a velocity of 15 km/ second
would produce a crater around 172 km in
diameter.
However, this is much smaller than
current estimates for the Fri the Fort
crater.
Almost immediately after impact, the
crater widened and shallowed as the rock
below started to rebound and the walls
collapsed. This means instead the
structure's original diameter would have
been between a colossal 250 and 280 km
during the time of the impact. Something
able to create that much carnage would
have to be much larger than first
thought. 25 km larger and traveling at a
velocity of 20 to 25 km/ second to
explain a crater 250 km in size.
The center of the impact was so strong
that a 25 km section of Earth's crust
was turned on its head. The various
layers of upturn rock eroded at
different rates and produced the
concentric pattern still visible today.
You'll notice that only part of the ring
is visible. That's because areas to the
south have been paved over by rock
formations that are less than 300
million years old. The young rock
formations have begotten fertile soils
that are intensely cultivated.
The darker ring in the center of this
image known as the Frier default
mountainland has shallow soils with
steep terrain not suitable for farming.
So this area remains naturally forested.
Along the ridges in the mountainland you
can see white lines. These are the
hardest layers of rock such as quartzite
which resist erosion.
The outer part of mountainland has
exposed rocks that are roughly 2.8
billion years old.
The impactor that formed the Fred theort
crater would have been larger than the
asteroid that killed off the dinosaurs
66 million years ago, forming the chick
zaloo crater.
If the Fred crater was even larger and
the impact more energetic than that
which formed the Chickixaloo crater, its
force may have caused even more
catastrophic global consequences.
More recent impacts like the Chickixaloo
event were followed by devastating
fallout.
Chickixaloo caused mega tsunamis,
violent earthquakes, firestorms that
turn forests to ash, and atmospheric
dust accumulations that cause global
temperatures to drop for a sustained
period of time. And of course, the
extinction of the dinosaurs, which we'll
come on to later.
But earth was much different when the
fridfort impact event occurred. There
were no animals and no forests.
Earth was much different during that
time 2 billion years ago. There was only
simple life. Oxygen was starting to
accumulate in the atmosphere and
ukariots were only just starting to
appear. Some circles from space are just
simply beautiful to look at. But others,
like this one, are forever stitched into
the fabric of every single fiber of our
planet's very existence.
They're like deep battle scars that
serve as a constant reminder of just how
powerful external forces can be.
As our circular journey around the world
begins to take shape, it's time to meet
a circle unlike any other on the list.
There are some stunning examples of how
Earth's geology and indeed things
hurtling toward Earth have shaped these
circles.
But what shaped this next one is
neither.
The Mount Tanaki legend, a core part of
Maui tradition, tells of a battle for
the love of a mountain named Fahinga,
where Tanaki, initially residing near
Tangi, was defeated by Tongariro and
fled west, carving out the Wonganui
River on his journey.
So key to New Zealand's story is this
place. The mountain has been granted
legal personhood, meaning it now has the
same legal rights, powers, duties,
responsibilities, and liabilities as a
person. Something that only happened
this year in 2025.
Person or not, it is perhaps one of the
most bizarre looking circles visible
from space on planet Earth. And for one
very good reason,
us.
Before humans arrived in New Zealand
some 700 years ago, much of the
landscape was heavily forested, a
biodiversity sanctuary. In the 1800s,
European settlers arrived in New
Zealand, clearing those lush forests
away on an industrial scale, making way
for pasture land.
Around 50% of New Zealand was eventually
cultivated into grassland for animals to
graze upon, and gone were its dense
forests.
But one area remained forested.
The government reserved an area around
the peak of Mount Tanaki to help defend
against flooding and coastal erosion.
And in 1900, it became a national park.
Eggmont National Park was defined as a
circle 10 km in radius from the summit
of the mountain. Everything else cleared
up to its boundary. The result was the
perfect circle making up the base of the
mountain. its luscious green forests
standing out from space against the
exposed grasslands in one of Earth's
most symmetrical landmarks, quite
literally drawn with a compass.
Not only is the circle perfect, but the
volcano itself is one of the most
symmetrical in the world. It would win
any geological beauty pageant. At 2518
meters high, Mount Tanaki is the highest
volcano on New Zealand's mainland.
Formed 135,000 years ago by subduction
of the Pacific plate below the
Australian plate. It is a strat volcano,
a conical volcano consisting of layers
of pummus, lava, ash, and tera.
Mount Saranaki is made up of an ignous
rock called andite, a fine grained
volcanic rock. These strat volcanoes
have steep sides and look how volcanoes
are usually drawn, giving it that
perfectly symmetrical shape.
Mount Tanaki is famous for its laas, an
erosional force that helps give it that
distinctive shape.
Lahas are where the glacier on the
mountaintop is melted and the water
rushes down the mountain slope, forming
steep gullies on its way to the sea.
Unlike any other circle in this video,
this one could erupt. The last major
eruption was in 1655, but more minor
eruptions occurred in the 1850s.
Ironically, what this means from a
volcanology perspective is that an
eruption is overdue and may well destroy
the very circle that produced it in the
first place.
Now, I warned you at the start of the
video that there was another eye staring
back at us from space. Well, not only is
this one literally named after an eye,
it's also capable of moving like our
very own eyes.
In the northeast of Argentina, in the
delta of the swampy wetlands of the
Piranha River, there is a strange
floating island nestled in the murky
waters.
Such a perfectly round Oculus is Elohor
that legend has it UFOs are harbored
deep below its surface. It is, after
all, the perfect shaped garage for an
alien craft.
Strangely, that's not even the creepiest
thing about this circle because this
circle moves.
Unlike any other circle in this video,
Eloho is so peculiar that it rotates on
its axis in a clockwise direction.
This can be easily observed with
satellite images from above. Elohor
looks noticeably different over time.
Want more creepiness? Well, Elo,
translated to English means the eye. So,
when you see this circle from space, not
only do you see an eye staring back at
you, you see a moving eye blinking back
at you. Another theory suggests that
Elohoro is a gateway to another
dimension or a supernatural realm. This
idea is based on its movement, which
some claim is not entirely explainable
by natural forces alone. We shall see.
Some even say people who get too close
experience unusual sensations or time
distortions.
Well, fortunately for us, people have
gotten pretty close to Eloro and
returned to tell the tale actually
fairly recently.
And if UFOs, portals, and time
distortions weren't Hollywood enough for
you, this circle was actually discovered
by a filmmaker,
Argentine filmmaker Sergio Newspiller.
looking for a location for a paranormal
film, came across the unusual formation
while browsing Google Earth satellite
images in 2016. His attention was caught
by the unusual almost perfectly round
shape of the island located in a
hardto-reach area of the Piranha Delta.
newsper told the newspaper El Observador
at the time in a translated article. El
as he named it is a discshaped island
188 m in diameter covered in vegetation
that floats in a crystalclear lake that
is just as perfectly circular as the
island itself. The island has solid
stable ground, a rarity in the Piranha
Delta, where soft, swampy terrain
dominates. What's more, the surrounding
water is exceptionally clear and cold,
which contrasts from the region's
typically warm and turbid reservoirs.
New Spiller has so far taken credit for
discovering this particular circle, but
the likelihood is locals would have been
aware of it for quite a bit longer.
Either way, this is the youngest circle
on our list by a number of centuries.
But how did it get there? How is it
possible to turn up one day to see Elho
and then a few days later it's in a
completely different position?
Because of its infancy, the origin of
Eloro still remains a matter of
speculation, which is pretty exciting.
Perhaps the most plausible explanation
is that scientists believe the island
and its lake form through a combination
of erosion and water currents.
Over time, the rotation caused by
circular water flow has gradually shaped
the island and the lake into their near
perfect forms.
This is a kind of rotational scaling
where the edges rub together and thus
form its circular shape. This natural
process resembles similar phenomena
observed elsewhere, such as the ice
discs in Maine's presumpscot river.
However, the exact timeline of its
creation is still unclear.
In 2016, new spiller and hydraulic
engineer Ricardo Patroni started
crowdfunding an expedition to the
island, hoping to perform scuba diving,
drone data collection, and soil and
plant analysis. However, their
fundraising attempts failed, reaching
only $9,698
of their $50,000 goal. On the 10th of
October 2016, Kickstarter eventually
declared the fundraising campaign
unsuccessful.
Perhaps if this video does quite well,
we could finish that off and finally get
some answers.
We move on to perhaps the most deadly of
all the circles visible from space. A
circle that quite literally changed the
entire course of planet Earth for
eternity.
We now know the origin of the asteroid
that wiped out the dinosaurs and ended
the Mesazoic era. 66 million years ago,
an asteroid about 10 km wide came
rushing out of space at a velocity of
more than 25 km/ second, striking what
is now Mexico's Yucatan Peninsula.
The enormous amount of energy generated
by this impact, equivalent to 10,000
times the world's nuclear arsenal, or 10
billion Hiroshima bombs, ejected into
the atmosphere huge quantities of dust
particles and gases.
The asteroid penetrated the Earth's
crust down to a depth of several kilome.
It vaporized melted and shattered ocean
water and the Yucatan target rocks
composed of carbonate and sulfate. The
rocks underwent fluidization and started
behaving like a liquid upon impact.
What was left was a crater some 200 km
in diameter, the Chickixaloo crater.
Over a short period of time, just a few
minutes, several hundred billion tons of
carbon dioxide, sulfur dioxide, and
water vapor released by the vaporized
target rock were injected into the
Earth's atmosphere. An abrupt and global
perturbation of the Earth's system
followed. The climate became unstable.
The fine dust suspended in the
atmosphere blocked sunlight, decreasing
or even stopping photosynthesis.
The collision and its aftermath
ultimately killed off 75% of all life on
Earth, including the dinosaurs.
But what could possibly cause such a
catastrophic event?
The first clues that an asteroid was
responsible for the end of the dinosaurs
weren't discovered until the 1970s.
Father son team Louie and Walter Alvarez
found high levels of something very
unusual in rocks that dated back to the
time of the Cretaceous, a geological
period that began 145 million years ago
and ended 66 million years ago.
They found iridium. Now, iridium is
quite rare on Earth's rocks, but rather
common in asteroids, spearheading the
theory that the impact had originated
from space. At the time, it was quite a
controversial take, however, and wasn't
fully supported until geoysicists
Antonio Kamo Zenugra and Glenn Penfield
came along.
They were exploring the potential oil
reserves of Yucatan for the Mexican oil
company PMEM and discovered the
Chickixaloo crater itself.
In the early '90s, studies of the
recovered core samples confirmed that
the Chickixaloo structure was indeed a
huge impact crater.
The force of the impact was so great
that it altered the physical shape of
the planet, transforming rock into
glasslike sphererals.
These sphererals were scattered across
the world where they are often found
together with the distinctive layer of
aridium from the asteroid.
But even up until last year, 2024,
something still stumped scientists.
Where did this asteroid actually come
from? I mean, obviously from space, but
where exactly?
It was suggested in the mid200s that it
might have originated among the
Baptistina asteroids in the main
asteroid belt, but recent evidence has
ruled this out.
So instead, scientists turned to the
chemical record this asteroid left
behind. And what they found finally
answered a 60 million-year-old riddle.
They needed to determine what type of
asteroid the Chickixaloo space rock was.
So the team took samples from rocks in
Spain, Italy, and Denmark dated to the
end of the Cretaceous. The data revealed
this was no ordinary asteroid.
Comparison between the chemical record
left behind by the strike 66 million
years ago, and no meteorite samples
suggest it was a carbonacious condrite,
one of the oldest known types of
asteroids, having formed billions of
years ago in the early solar system.
These condrites can only stem from
asteroids found beyond Jupiter, which is
where our asteroid must have come from.
Today, things look a little different.
Thankfully, the Chickixaloo Crater,
which now lies partially on land, is the
best preserved large impact crater on
Earth.
In the millions of years since the
impact, the crater has been buried in
thick layers of limestone. However,
remnants of the crater are still visible
at the surface. A 250 km long arc of
sink holes marks the crater rim. Because
rainwater is slightly acidic, surface
water dissolves and seeps down through
the limestone bedrock, creating solution
pits, cenotes, and caves, as well as the
world's longest underground river. When
those thick layers of limestone erode,
the chalky sediments wash out onto the
broad, shallow Yucatan shelf.
That was a lot, wasn't it? I don't know
about you, but I could do with a bit of
calling off.
We're going somewhere we haven't yet
been in this video. Down into the ocean.
The great blue hole in Bise. Nothing but
a deep blue void extending down 125 m
into the abyss. Near perfect circle.
some 300 m wide. Whilst this might be
one of the more familiar on my list, it
holds the secrets to a civilization that
thrived in these parts over a thousand
years ago.
There is much more to the Great Blue
Hole than just outstanding marine life.
Let's start with how this got there in
the first place. And that journey isn't
as far back as the dinosaur killer we've
just visited. We're heading back to the
most recent glacial period which
occurred between about 120,000 and 11
12,000 years ago. At that time, the sea
level was much lower than it is today,
exposing the limestone bedrock of the
region. Bise, particularly the Kaio
area, is renowned for its extensive
network of limestone caves, which to
this day remain as uncanny reminders of
a turbulent geological past. Over
thousands of years, salic tites and
stallic mites formed inside these caves.
Rainwater rich in carbon dioxide slowly
eroded the limestone, creating an
extensive network of underground caves.
As the ice age began to draw to a close,
more and more sea ice entered the
oceans, causing sea levels to rise
substantially by more than 100 m.
Over time, that limestone cave system, a
once dry cave network, was gradually
flooded as the sea level rose, causing
the roof to collapse and creating the
circular sinkhole that we see today. One
of the most notable features of the blue
hole is its deep blue color, which is
caused by the depth of the sink hole and
the lack of sunlight penetrating its
depths. Could life exist down here at
all? In the winter of 2018, a submarine
crew ventured to the bottom of the hole
in order to create a 3D map of the
sinkhole, confirming the gruesome truth
about the Great Blue Holes formation.
Down at depths of 400 ft near the very
bottom of the hole, they discovered new
stallic tites that were formed when the
sea level was about 500 ft lower. These
had never been seen, let alone mapped
before.
Suddenly, the labyrinth below, came to
life. They also made some startling
marine discoveries, deeming an area of
the hole the conch graveyard.
After observing hundreds of dead conches
or mollisks that had seemingly fallen
into the hole, couldn't get back out,
and eventually ran out of oxygen and
sadly died.
They found tiny tracks where the
conscious had tried to backtrack up the
hill and tiny slide marks where they
seemingly slid back down. But animals
weren't the only victims of this deep
blue graveyard.
Marks where divers had tried to escape
were also spotted, resembling something
from a watery horror film with old
scientific equipment and even a GoPro
discovered. Things got more gruesome
still when they found the owners of that
equipment. The bodies of two divers who
had tragically also been lost to the
hole. How many more people have died in
this deadly abyss is still unknown.
Strangely though, it's not what's going
on below the surface that's most
intriguing to me. The Great Blue Hole
also provides a vital clue to a lost
world. The Mayans were a once thriving
civilization, reaching their peak during
the classic period roughly from 250 to
900 AD, a time when they built great
cities like Teao, Pelen, and Copan.
During this time, agriculture
flourished. But the decline and eventual
collapse of this once great civilization
has caused debate and confusion amongst
historians for decades. And bizarrely,
this geological wonder, the Great Blue
Hole, offers a huge clue as to what
happened.
Professor Andre Droxler of Houston's
Rice University led a team that analyzed
sediment from the Great Blue Hole.
He found that the sediment indicated two
long periods of little or no rain. The
second drought apparently occurred
between 1,00 and 1,100 AD, the same time
that the mine city of Chichin fell.
They found that the ratio of titanium to
aluminium changed in the 9th and 10th
centuries, a period when the Mayan
civilization in the Yucatan Peninsula
went into decline.
More titanium means that heavier rains
were affecting the region since the
runoff from the area's volcanic rock is
rich in the element.
But from about AD 800 to 1,000, the
ratio between the two elements was much
smaller, indicating that there was much
less rainfall. In other words, a
prolonged drought likely led to the
collapse of classic Mayan civilization.
On the complete other side of the
spectrum, and as recently as April 2025,
sediment core data extracted from the
Great Blue Hole by geocientist Dominic
Schmidt led us into another
meteorological secret.
After studying a 30 m sediment core
extracted from the floor of the
sinkhole, scientists discover that
tropical cyclones have increased in
frequency over the last 5,700
years. In that time span, the
researchers identified 694
event layers that they attributed to
tropical cyclones. With this data, they
were able to piece together how cyclone
frequency has changed over time.
The core revealed a steady trend of
increasing cyclone activity over the
last 5,700 years with a key factor being
the southward shift of the equatorial
low pressure zone known as the
intertropical convergence zone. This
zone influences the location of major
storm formation areas in the Atlantic
and determines how tropical storms and
hurricanes move and where they make
landfall in the Caribbean.
Based on these trends, we could be
facing an unprecedented spike in
tropical cyclone activity. There were
nine cyclone events in the last 20 years
alone, a frequency that is inconsistent
with normal natural climate
fluctuations.
So quite fittingly, our tour of circles
from space comes full circle. It sounds
like such a simple concept, doesn't it?
To be honest with you, I was hoping in
this video that we'd find some sort of
wild, crazy missing component that
somehow links all these amazing circles
together. But actually, I I think we've
uncovered something better. On the
surface, these circles just look like
cool images that many wouldn't think
twice about. But in reality, each one is
a gigantic clue into the very fabric of
our planet, shining a light on Earth's
geological and even cultural history.
So often it's not just the circles
themselves that are impressive, but also
the reasons why those circles exist in
the first place. Rather like soldiers
battle scars telling the story of a
great war. These circular scars tell the
stories of millennia or even eons. And
so really that's what links them
together. Collectively they tell the
story of a planet, our planet.
I'd love to have included more and more
circles, but please do let us know in
the comments if there's any circles that
we missed or that deserve to have been
featured here. And we'll see you in the
next one. If your learning hasn't quite
Brilliant for sponsoring this video.
Okay, fine. I'll say it. Math is fun.