For the medievals, the moon was a versatile religious symbol

UK's Royal Astronomers join the hunt for Ramadan's crescent moon

In Britain, Muslim communities and professional astronomers now collaborate to officially spot the moon that begins Ramadan, blending ancient practice with modern science. The partnership culminates in a live, unscripted annual broadcast even.

Ancient Greek told to kick rocks after claiming moon wasn't a deity

About 2,500 years ago, ancient Greek philosopher Anaxagoras theorized that the moon probably wasn't a goddess. This article explains how this belief led to his exile. Anaxagoras also argued the sun was just a burning rock, writing that it was the sun that illuminated the moon. According to this resource, this theory enabled Anaxagoras to accurately explain eclipses and lunar cycles.

Learn how the Egyptians, Romans, and other ancient civilizations worshipped the sun

In Egypt, the pharaoh was seen as the living embodiment of the son of Ra, the sun god. In Mesopotamia, the sun god Shamash was a divine judge whose light could reveal the truth. Huitzilopochtli, the Aztec god of sun and war, was thought to require sacrifices to prevent the universe's destruction.

In the 1600s, coffee had religious significance

In the 1600s, coffee was important in multiple religious traditions. In Yemen, it was the drink of choice for Sufi mystics to improve their focus and fuel their grueling meditations. Pope Clement VIII's approval spread coffee’s popularity from the Muslim to the Christian world, paving the way for the cappuccino.

Why some people say the moon is made of cheese

Mental Floss digs into the history behind the fable, which dates back as far as the 1500s, when it was mentioned in "The Proverbs of John Heywood." Even NASA has gotten in on the joke, tweeting a (supposedly) doctored photograph showing the moon's expiration date.

What the stars once meant to ordinary people

The stars were a crucial aid for ordinary human beings in premodern societies, acting as regular timekeeping phenomena and celestial navigators. Today, light pollution and modern technology have rendered the stars a mere aesthetic delight for most of us, but their significance in history remains. Watch this brief video to learn how premodern humans used the stars for navigation, mathematics, and more.

The Five Pillars of Islam, explained through Islamic art at the Met

Fasting during Ramadan—known as sawm—is one of five foundational practices that define Muslim life. The Met uses art objects to illuminate the pillars to make the theology more tangible. Ramadan's fast is interwoven with this broader framework of prayer, charity, pilgrimage, and expressions of faith.

The medieval meaning of your birthstone

Medieval people viewed birthstones very differently from modern jewelry marketing. Rather than simply being decorative, gems were believed to possess extraordinary magical, medical, and mystical powers. This article breaks down some fascinating insights into medieval gemstone beliefs, including that diamonds could fend off insanity and nightmares.

Six myths about the Middle Ages

The Middle Ages, or medieval era, refers to roughly 500 CE to 1,500 CE. Contemporary opinion perceives this era as "dark" or backward because it was the time between the fall of Rome and the rise of the Renaissance. But much of the era was vibrant, and many myths are just that, including the idea that most people believed the Earth was flat. Watch this video to debunk more myths.

Dreams have long been used for religious and political power

Classic literature and mythology attests to the crucial role dreams play in narratives, from the Virgin Birth to the prophetic visions of Gilgamesh and Enkidu. The heightened state of dreaming and its analog, hallucinating, have long held special power over the collective imagination.

How lunisolar calendars work

Despite being called Lunar New Year, the Chinese calendar that the holiday is based on is actually lunisolar, or based on both the sun and the moon. Many religious holidays—including Easter, Ramadan, Chinese New Year, and Passover—do not have fixed dates according to the now-ubiquitous Gregorian calendar.

Miracles versus magic: How early Christians distinguished their beliefs from pagan ones

This in-depth article describes how early Christians attempted to differentiate their beliefs and rituals from those that came before. One major difference? Demons. For pagans, demons could be good or bad, occupying the middle ground between gods...

How the moon creates tides

Anyone who has visited large bodies of water virtually anywhere on Earth notices low and high tides occur at regular intervals, a process primarily driven by the moon’s gravitational pull. This explainer details how the motion of the Earth and Moon interact to create tides.

Medieval monasteries preserved ancient knowledge through hand-copied books

Medieval monks and nuns lived in religious communities devoted to work and prayer. Still, their script-copying traditions had a lasting impact: through illuminated manuscripts, monasteries preserved hundreds of ancient texts that might have otherwise been lost.

The dragon has been central to Chinese culture since ancient times

One of the most recognizable symbols in Chinese culture, the dragon is known as a mighty yet often benevolent creature. The dragon is capable of interacting with gods in the heavens; it can turn invisible, shape-shift, and control the weather. These features made the mythological creature hugely significant to the Chinese people because if they could summon dragons, other aspects of their life could improve.

The history and significance of rosemary

Rosemary is more than just an herb—it’s a powerful symbol intertwined with ancient Egypt, Christianity’s origins, Shakespeare, the culinary arts, and more. Native to the Mediterranean area, this plant has accompanied humanity for centuries, providing us with pleasant aroma, adornment, and even medicine. Explore this article for further insight into the significance of our long-standing relationship with rosemary.

The Knights Templar were the first officially recognized Christian military order

The Knights Templar sought to protect Christian pilgrims and expand their religion’s influence through might. The warrior monk organization formed after the First Crusade and were named after the fallen First Temple of King Solomon, out of which they were based—leading to the name “Templars.” This article describes the rise and fall of the monastic order.

Explore the medieval world in this 14th-Century map

This virtual replica of a 14th-Century map allows viewers to see the medieval world through a Christian framework. Jerusalem is the center axle of the map, harkening back to the Bible's Old Testament, which states Jerusalem is the "centre of...

The Advent wreath marks each week before Christmas with the lighting of candles

An Advent wreath is a circle of evergreens holding four candles—one for each Sunday of Advent. Christians light a new candle each week, often tied to themes like hope or joy, creating a visible countdown to Christmas.

Theologians describe how Jesus likely aligned his death with the Passover

Jon Collins and Tim Mackie trace how the Last Supper, the temple confrontation, and the crucifixion each map onto the story of the Exodus, making Easter the culmination of a cosmic liberation narrative begun in Egypt.

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by over 1.5 million Muslims.

The Sunni-Shia divide has fueled conflict and rivalry throughout the Middle East for centuries

Islam's ancient sectarian split, rooted in a seventh-century dispute over succession following the Prophet Mohammed's death, has shaped modern geopolitics—most visibly in the proxy rivalry between Sunni Saudi Arabia and Shia Iran, whose competition for regional dominance has inflamed conflicts across Syria, Iraq, Lebanon, and Yemen.

How metaphors shape the way we think

A metaphor is often viewed as a form of art, deployed only in special circumstances to help an audience grasp something complex or unique. But metaphors are far more fundamental than that, shaping much of how we think about our relationship to others and the world. This article explores how a focus on the metaphors we use can clarify and strengthen our thinking. Learn more here.

The Aztecs worshipped Mictecacihuatl, goddess of the underworld

Some elements from ancient festivals honoring Mictecacihuatl and other deities, like incense, skeleton imagery and marigolds, have been incorporated into modern Day of the Dead celebrations, possibly indicating that the holiday blends indigenous and Catholic traditions.

What is the function of money?

Nearly everyone uses some form of money to facilitate day-to-day activities, but what is it, anyways? Economists define money as anything that can be accepted as final payment for goods and services. Shells, beads, corn, and a wide range of objects have acted as money throughout history—explore the common but deceptively abstract concept of money in this eight-minute podcast from the Federal Reserve.

Black cats got their frightening reputation in the Middle Ages

Though many cultures in Africa, Asia, and Europe recognize black cats as symbols of good fortune, they're associated with bad luck and America's spookiest holiday. Their association with evil didn't gain traction until the 13th century, as religious figures and European folklore drew connections between cats, Satan worshippers, and witches.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

El Niño, Spanish for 'the boy,' was named after Jesus Christ because the phenomenon resembled the weather changes observed around Christmastime.

All rainbows are 'raincircles' caused by water droplets separating white sunlight into a spectrum of colors, but Earth's surface blocks the bottom half of the circle from our line of sight.

The Mona Lisa's celebrity status and repeated restorations have obscured what made the painting so revolutionary for its time

44% of Americans say they pray at least once a day—discover how your state's religiosity stacks up against the rest of the country.

While the sun's gravity keeps the planets in orbit, their gravity also pulls on the sun, causing it and everything else in the solar system to orbit around a mutual balance point called the barycenter—the true center of the solar system.

After NASA's Voyager 1 captured Earth as a single pixel as it left the solar system in 1990, astronomer Carl Sagan used the image to reflect on humanity's fragility and the responsibility to protect 'the only world we've ever known.'

Browse a detailed visual analysis of over 200,000 similes—comparisons that often use 'like' or 'as'—from popular fiction to see how frequently writers the same idiomatic expressions.

Apollo astronauts left items in the moon's 'toss zone,' including golf balls, family photos, and bags of human waste, to make room for lunar rocks.

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

Visualize the path of every solar eclipse from 1900 to 2099 and see what each looks like when observed from different locations on Earth.

See photos of Meteora, a mountainous site in central Greece, home to 14th-century monasteries perched atop soaring outcroppings.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

Salvador Dalí believed he was his own dead brother, who had died nine months before he was born

The first horror movie is believed to be George Méliès' 1986 short 'The Haunted Castle,' which pioneered the use of special effects

Prince's sexually explicit 1984 track 'Darling Nikki' attracted the ire of the Parents Music Resource Center, an advocacy group that inspired the Parental Advisory sticker, even though the song ends with a Christian message.

See how fireworks are made and learn how metals like magnesium and copper are responsible for different colors.

Crows are believed to have intelligence on par with a seven-year-old child and demonstrate complex behaviors, from problem-solving with tools to recognizing human faces.

The hormonal disorder PCOS was renamed PMOS in 2026, a move designed to improve care and research by shifting the focus to the hormonal causes of this condition that affects 1 in 8 women.

Tattoos remain visible on your skin thanks to immune cells called macrophages

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

NBA superstar Victor Wembanyama spent the 2025 summer training with monks in central China to enhance his body and mind.

Volcanic activity may have triggered the Black Death by spewing gases that led to crop failures in Europe, thus forcing the import of grain ships with plague-infested fleas.