Is it really made of cheese?

Many moons ago: 10 lunar facts you might not know

Image: Sanni Sahil

Humanity has always had the Moon as a companion, using it to track time and the seasons and even believing it capable of affecting people’s behavior. As Earth’s only natural satellite, the Moon has a significant influence on our planet, from causing tides to keeping the globe from tilting even more. Let’s learn more about her!

Image: Nicolas Thomas

No one is certain about how the Moon came to be, but scientists have some educated guesses. The most widely accepted hypothesis is that the Moon is a by-product of a collision between a very young planet Earth and another celestial body the size of Mars. This collision not only left Earth permanently tilted, but it also blasted large amounts of material into space. The Moon is thought to have formed from this debris and, in consequence, is related to Earth.

Image: Dennys Hess

Similar to Earth, the Moon also experiences ‘earthquakes’ or, in this case, moonquakes. But, unlike Earth, the Moon lacks tectonic plates. Instead, its seismic activity is caused by meteorite impacts, the gravitational pull of the Earth and the Sun, and shrinkage due to heating and cooling. These quakes are nowhere near as strong as an earthquake, but they are significant enough to pose challenges for the construction of permanent lunar bases.

Image: v2osk

One side of the Moon is always obscured, but this doesn’t mean it is perpetually dark. Each face of the moon experiences about two weeks of sunlight at a time, while the other side experiences night. However, one of its sides is constantly facing away from the Earth, which means there is a side that we don’t see. It has been called ‘the far side’ and ‘the dark side’, not because it lacks light, but because it is unknown.

Image: Bernd 📷 Dittrich

We always see the same face of the Moon from Earth, but its appearance changes depending on our location. It’s largely a matter of perspective: from the Northern hemisphere, the Moon is perceived "upright", while in the Southern hemisphere it appears effectively "upside down." A waxing crescent moon looks like a "D" in the North, but like a "C" in the South, with the light on the left. This explains why Northern hemisphere cultures have traditionally seen a man or rabbit in the Moon, while Southern hemisphere cultures haven’t. The markings on the Moon are the same, but they are perceived differently.

Image: NASA

American astronauts and Soviet spacecraft landers have left several flags and banners on the Moon, but they are merely symbolic. According to the 1967 Outer Space Treaty, outer space and its celestial bodies—the Moon included—belong to mankind as a whole, and can’t be legally claimed by a single nation or owned as private property. The same treaty states that the Moon can only be used for peaceful purposes, prohibiting military installations and nuclear weapons. In recent years, however, the U.S. and other countries have challenged the Outer Space Treaty.

Image: Jenin Abumazen

The Moon has its own gravity, weaker than Earth’s because of the size difference, yet it still exerts a significant influence on our planet. The Moon’s gravitational pull helps stabilize Earth’s axial tilt, preventing it from shifting constantly. This pull is the reason tides exist: water is a fluid, so it moves much more easily than land when pulled by the Moon’s gravitational force, creating the familiar rise and fall of the oceans.

Image: NASA, Public domain, via Wikimedia Commons

Did you know that only twelve people have ever walked on the Moon? Neil Armstrong and Buzz Aldrin were the first to do so, on July 20, 1969, and the last was Gene Cernan on December 14, 1972. All twelve moonwalkers were American astronauts from NASA’s Apollo program. In total, six Apollo missions successfully landed astronauts on the Moon.

Image: Victor Kallenbach

Unlike solar eclipses, the Moon is not completely darkened during a lunar eclipse. It is illuminated by the refraction of sunlight on Earth. As the light passes through the Earth’s atmosphere, it scatters, causing the light and the Moon to be perceived as reddish or as a ‘Blood Moon.’

Image: Benjamin Voros

Solar calendars are widely used today, but this wasn’t always the case. The lunar cycle and the phases of the Moon have been used to track time for thousands of years, and they are the origin of the idea of months and weeks. Although most of the world now officially uses the Gregorian solar calendar, the continued importance of lunar calendars can be seen in observances such as the Lunar New Year in many Asian cultures, the calculation of Easter in Christianity, Ramadan in the Islamic world, and festivals such as Holi and Diwali in Hindu traditions.

Image: Luca

Werewolves, witches, lunatics. What does the Moon have to do with them? Cultures all around the world have, at some point, believed that the Moon had a powerful influence on human behavior, much as it does on Earth itself. Full moons in particular were thought to cause sleep deprivation and worsen mental conditions. Individuals who were ‘moonstruck’ were dubbed ‘lunatics,’ after luna, the Latin word for the Moon.

The truth about your brain

You won’t believe what happens in your brain while you sleep

Image: Milad Fakurian

Your brain is one of the most powerful and mysterious organs in your body. It controls everything from your thoughts to your emotions and even processes information at lightning speed. But how much do you really know about it? Some long-believed myths about the brain have been debunked, while other surprising facts reveal just how incredible this organ truly is. Get ready to be amazed by these fascinating brain facts!

Image: Natasha Connell

You’ve probably heard this one before, but it’s completely false! While it’s true that not all parts of the brain fire at the same time, imaging studies show that most regions are active throughout the day, even when we sleep.

Your brain is constantly working, controlling bodily functions and emotions, and processing information. So next time someone says you’re only using 10% of your brain, you can confidently tell them that’s just a myth!

Image: Aarón Blanco Tejedor

Here’s a weird fact: While your brain processes pain signals from the rest of your body, it has no pain receptors of its own. This is why surgeons can perform brain surgery on conscious patients without causing them pain.

However, the membranes and tissues surrounding the brain do have pain receptors, which is why headaches and brain injuries can be so excruciating.

Image: Usman Yousaf

How come we have headaches if the brain has no pain receptors? Well, that’s because headaches are triggered by chemical activity in the brain, changes in nerves and blood vessels, and even fluctuating serotonin levels.

In some cases, hormones like estrogen can also play a role, which explains why migraines are more common in women.

Image: Go to Johannes Plenio's profile Johannes Plenio

Dreams are proof that your brain never rests! (Warning: this fact can make you feel exhausted.) While you sleep, your limbic system, that is, the part of the brain that deals with emotions, becomes especially active, which is why dreams often feel so intense.

On average, humans experience four to seven dreams per night, even if we don’t always remember them. And what about that scary nightmare about falling? Well, you can thank your amygdala, the brain’s fear center, for that one.

Image: Brett Jordan

Have you ever walked into a room and instantly forgotten what you were after? That’s because short-term memory only lasts about 20-30 seconds! That’s not enough!

Your brain holds a limited amount of information in its active state before deciding whether to store it or discard it. Ironically, we can’t really choose what makes the cut, but we do hope these facts stay with you!

Image: BUDDHI Kumar SHRESTHA

That sharp, icy pain when you eat something too cold? It’s your brain’s way of telling you to slow down! Officially called sphenopalatine ganglioneuralgia, a brain freeze happens when cold food or drinks rapidly chill the blood vessels in your throat, causing them to constrict and then rapidly expand. This sends pain signals to your brain, warning you of the sudden temperature shift. It’s annoying, but it’s actually your body trying to protect itself!

Image: Josh Riemer

You didn’t need us to tell you, but let’s look at the details: The average person has between 12,000 and 60,000 thoughts per day. What’s even more interesting? 95% of those thoughts are the same ones you had yesterday. Is that not surprising enough? Hear this out: 80% of them tend to be negative. That’s because our brains are wired for survival, constantly analyzing risks and potential dangers.

Image: Terry Vlisidis

Even though it only makes up about 2% of your body weight, your brain employs a major quantity of energy! It consumes 20% of your oxygen and blood supply, making it one of the most demanding organs in your body.

If your brain goes without oxygen for just five minutes, brain cells start dying, leading to irreversible damage. This is why deep breathing and cardiovascular exercise are great for brain health!

Image: Alexander Andrews

Do you know that feeling when you hit the back of your head and see stars? That’s because your occipital lobe, which controls vision, is located at the back of your brain. If you get hit there, your brain momentarily misfires, causing flashes of light.

Interestingly, your brain processes vision on the opposite side; while your right brain controls your left eye, your left brain controls your right eye. It’s one of the many ways the brain operates in a complex way.

Image: Rodion Kutsaiev

Believe it or not, your brain generates between 12 and 25 watts of electricity when you’re awake. If you can’t really grasp how powerful that is, check this out: It’s enough to power a small light bulb! Your brain’s electrical activity is what allows neurons to send signals at speeds of up to 260 miles per hour.

Image: Robina Weermeijer

Your brain may be the fattiest organ in your body, consisting of at least 60% fat! This is why consuming healthy fats, like omega-3s and omega-6s present in fish, for example, is essential for brain health.

Healthy fats stabilize brain cell walls, reduce inflammation, and support cognitive function. So go ahead and enjoy that avocado toast, it’s food for your brain!

Image: Robina Weermeijer

It’s not just your memory that fades over time; the brain itself physically shrinks as one gets older. It continues developing until your late 40s, but after that, it slowly decreases in size.

Now, size doesn’t equal intelligence, so a smaller brain doesn’t necessarily mean a less capable one. Staying mentally active, exercising, and eating brain-boosting foods can help keep it in top shape!

Image: Lisa Yount

We often think of cholesterol as bad, but your brain actually depends on it! In fact, 25% of your body’s cholesterol is stored in your brain, where it helps with learning and memory. However, unlike other organs, the brain can’t absorb cholesterol from the blood, it has to produce its own. So, while too much cholesterol in the body can be harmful, the right amount is vital for brain function. At least you can use that as an excuse to get that burger!