Leo Constellation: the Lion that turned a murderer into a hero

Hercules, Sekhmet, and the Maya peccary looked at the same sky. They didn’t see the same thing.

By Juan Pablo Martín  |  ASTRONOMIKA TV  |  May 2026

There’s a star at the heart of Leo that spins so fast it’s on the verge of tearing itself apart. It has been doing this for thousands of years, right above our heads, while we look up and invent stories about it. Greeks, Egyptians, Maya, and Chinese all watched it shine and each one placed there what obsessed them most: power, destruction, failure, immortality. This article is about those stories. And about the star that outlived them all.

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Hercules showed up with weapons. He had to use his bare hands.

Before we talk about the Lion, we need to talk about Hercules. Because if you don’t understand who this man was, you won’t understand why sending him to kill the most impenetrable monster in the known world was, depending on how you look at it, either a punishment or a death sentence.

Hercules was the son of Zeus, which in Greek mythology was no minor detail. Zeus, the most powerful womanizer in the known universe, had a habit of falling for mortal women at a frequency that made his wife Hera absolutely miserable. Alcmena, Hercules’ mother, was one of those women. Zeus visited her disguised as her own husband. The result was Hercules: half god, half mortal, with superhuman strength that was visible from the moment he was born.

Hera, who knew everything, tried to kill him that very night by sending two serpents into his cradle. Baby Hercules strangled them with his hands. With his hands. As a baby. That should already give you a sense of the kind of person we’re dealing with.

He grew up and became exactly what his origin promised: the strongest man in the known world, irresistibly attractive, with a physical presence that made women seek him out and men want to be around him. Greek texts are not subtle about this. He was tall, with a physique that sculptors spent centuries trying to capture in marble. He married Megara, had children, and for a moment it seemed like the story was going to end well.

Then Hera intervened again.

The goddess, who had spent decades nursing her hatred toward her husband’s illegitimate son, sent him a madness. Not sadness, not confusion. A clinical, violent, temporary madness in which Hercules, without knowing what he was doing, killed his own wife and children. When he came back to his senses and saw what he had done, the strongest man in the world collapsed. He went to the Oracle of Delphi to ask how he could atone for the crime. The Oracle told him he had to serve his cousin Eurystheus for twelve years, a mediocre and cowardly man who was terrified of him, and complete whatever tasks he imposed.

Twelve labors. The first was the Nemean Lion.

Eurystheus didn’t choose that labor by accident. The Nemean Lion was the terror of the Argolid region. It was no ordinary lion: it was a creature of enormous size whose skin was literally impenetrable to any known weapon. Arrows, spears, swords: everything bounced off. The villagers had stopped trying. The Lion came out, killed what it wanted, and returned to its cave. Nobody could do anything.

And the reason for that impossible hide was its origin.

The Nemean Lion was the offspring of Typhon and Echidna. You need to know who these two were to understand the scale of the problem.

Typhon was the most terrifying being that had ever existed in the Greek universe. Son of Gaia, the Earth itself, and Tartarus, the deepest abyss of the underworld, he was born as a cosmic act of revenge against the Olympian gods. His body was so enormous his shoulders touched the stars. He had a hundred serpent heads, each with its own voice, and from their mouths came simultaneously the roar of a lion, the bark of a dog, the hiss of a snake, and a sound no ancient text ever managed to describe properly. When he first appeared, the gods of Olympus, including Zeus, fled in terror to Egypt and disguised themselves as animals to hide. The king of the gods needed three attempts to finally defeat Typhon. He buried him under Mount Etna, where according to the Greeks he still lies, and earthquakes are his movements.

Echidna was different, but no less terrifying. From the waist up she was a woman of extraordinary beauty: pale skin, black hair, dark eyes. From the waist down she was a colossal serpent. Immortal and indestructible, she lived in a cave at the edge of the world and fed on humans. The gods never killed her. They simply decided not to get involved.

How did they meet? The texts don’t offer an elaborate love story, and it makes sense: they were the only two beings in the universe that the other couldn’t frighten. Typhon, before whom Zeus fled, and Echidna, whom the gods preferred to ignore, found each other at the margins of the known world and recognized one another. Two absolutes that needed no explanation. From that union were born, among others, the Hydra, Cerberus, the Chimera, the Sphinx, and the Nemean Lion.

So when Hercules arrived at Nemea with his bow, arrows, and bronze club, he wasn’t going to hunt an animal. He was going to face the offspring of the two most dangerous beings in the history of the Greek universe.

The arrows bounced off. The club was useless. Hercules chased the Lion to its cave, blocked one entrance with rocks, entered through the one he left open, and in the darkness, with no weapons that could help him, did the only thing he had left: he grabbed it with his hands. He pinned it down. He strangled it.

The Nemean Lion died at bare hands.

But the problem wasn’t over. Hercules needed the skin as a trophy and no blade could cut it. The solution came from the goddess Athena, who suggested the obvious once you think about it: use the Lion’s own claws. If nothing external can cut that skin, something internal can. Hercules used the animal’s claws to skin it.

The Nemean Lion’s pelt became his armor. The same hide that had made it invincible now protected the man who had killed it. From that day on, Hercules appears in every Greek representation with that pelt over his shoulders: a permanent reminder that his first labor wasn’t just about killing a monster. It was about learning to use the enemy’s own tools.

Eurystheus, when he saw Hercules return with the skin, hid inside a bronze jar in terror. Eleven labors still lay ahead.

In Greek mythology the original name is Heracles. Hercules is the Roman version. Both names refer to the same hero; we use Hercules throughout because it’s the name most readers recognize.

The same stars the Greeks placed in the sky to immortalize this story were seen by cultures that had never heard of Hercules, never heard of Typhon, and had absolutely no interest in a Lion. What they saw was completely different.

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The same sky, completely different stories

The Greeks weren’t the only ones who looked toward Leo and saw something extraordinary. Thousands of miles away, unaware of each other’s existence, other cultures looked at exactly the same stars and saw completely different things. None of those versions is more correct than the others. Each one says something profound about the culture that created it.

Egypt: the goddess who almost wiped out humanity (and ended up as the goddess of love)

To understand Sekhmet you first need to understand Ra, because without Ra the story makes no sense.

Ra was the sun god of ancient Egypt, which in a civilization literally built around the rhythm of the sun meant he was the most important god of all. Everything revolved around him: the calendar, agriculture, the legitimacy of the pharaoh, life itself. Ra wasn’t an abstract character; the Egyptians imagined him as an elderly man who crossed the sky in a solar boat during the day and sailed through the underworld at night, fighting demonic serpents so the sun could rise again each morning. Every single day. Without fail. For millennia.

The problem was that Ra was aging. And humanity knew it.

People started to murmur. First quietly, then louder. That Ra wasn’t what he used to be. That maybe it was time for someone else to take control. Human arrogance was reaching a level Ra couldn’t ignore.

So Ra made a decision. He summoned his eye, his direct extension into the world, and sent it to teach humanity a lesson.

That eye was Sekhmet.

Sekhmet, whose name in ancient Egyptian means simply “the powerful one,” was a goddess with the head of a lioness and the body of a woman. Protector of the pharaoh in battle, goddess of both war and medicine at the same time, because in Egyptian thinking whoever can destroy can also heal. When Ra called her, Sekhmet asked no questions. She was a warrior goddess; questions weren’t her style.

She came down to Earth and started killing.

Ra had asked for a lesson. Sekhmet understood extermination.

The slaughter was so efficient and so enthusiastic that Ra, watching from above, grew terrified of what he had unleashed. Humanity was disappearing. Sekhmet was no longer killing on orders; she was killing for the pure pleasure of the hunt, in a trance of violence no words could pull her out of. Ra tried to stop her. Sekhmet didn’t listen.

The problem was that no god could simply attack another god to stop them, especially if that god was his own daughter and his direct extension into the world. Ra needed another plan.

The solution was ridiculous, brilliant, and completely Egyptian: brew beer. Seven thousand jars of beer mixed with red ochre to give it the exact color of blood. They poured it over the fields where Sekhmet was going to hunt that night.

Sekhmet arrived, saw what she thought was a field flooded with blood, and drank. All of it. Seven thousand jars.

She fell into a drunken sleep, woke up transformed, and humanity survived.

What happened next is the twist nobody sees coming: the same goddess who almost destroyed all of humanity became Hathor, goddess of love, music, joy, and fertility. In some versions it’s a gradual transformation of character: Sekhmet, satisfied and at peace, discovers a side of herself that war had never allowed her to express. In others, Sekhmet and Hathor are two aspects of the same divinity, two sides of a coin the Egyptians understood perfectly: the same force that destroys can create.

Hathor was depicted with solar horns and a sun disk between them, presided over banquets, protected women in childbirth, and received the dead in the afterlife with bread and beer. Which, as it turns out, is also what saved humanity from her previous self.

The contrast with the Greek story couldn’t be more perfect. In Greece, the hero kills the Lion. In Egypt, the Lion is the goddess, and she almost killed everyone. Then she becomes the goddess of love. Hercules never had that kind of character arc.

The Maya: the peccary and the humans who failed before us

Before we talk about the peccary, it’s worth clarifying what it is, because it doesn’t come up much in everyday conversations outside of the Americas. The peccary (also called collared peccary or javelina) is an American mammal that looks like a wild pig with tusks, coarse fur, and a temperament that makes domestic pigs seem easygoing by comparison. If you’ve ever seen Pumba from The Lion King, picture him darker, grumpier, with more prominent tusks, and with absolutely no interest in making friends. That’s a peccary.

For Maya cultures, it was much more than a forest animal.

The story comes from the Popol Vuh, the sacred text of the K’iche’ Maya of the Guatemalan highlands, which preserves a much older cosmogony. In it, the creator gods Tepeu and Gucumatz (the Feathered Serpent, a deity the Maya shared in essence with other Mesoamerican peoples; the Mexica called him Quetzalcóatl: half quetzal, the most sacred bird of the region, half cóatl, serpent, a creature that united sky and earth in one being and represented wisdom and creation) faced a problem anyone ambitious will recognize: they had built the entire universe, but they lacked someone to admire them. Someone to say their names out loud. Without worship, the gods existed in silence. And existing in silence, for a Maya god, was almost the same as not existing.

So they started experimenting.

The first attempt was animals. The gods filled the world with deer, birds, jaguars, serpents, and peccaries. They could move, eat, and reproduce. But they couldn’t speak. They couldn’t say the names of their creators. The gods asked them to speak and the animals responded with roars, squawks, and grunts. Failure. The animals were condemned to live in the wild and to serve as food for the next attempt.

The second attempt was mud. The gods shaped a human figure from wet earth. It could speak, but its words made no sense. It dissolved in water. It couldn’t walk straight, it crumbled, it had no memory. Like building a house out of wet sand. Failure.

The third attempt was wood. Wooden men could speak, walk, and reproduce. They populated the earth and had children. It seemed like it was working this time. But the wooden men had no soul. They didn’t remember their creators. They felt no gratitude. They were functional but empty, like a machine that does everything it’s supposed to do without any understanding of why. The gods had enough and destroyed them. They sent a rain of boiling resin. The animals the wooden men had mistreated rebelled against them. Their own household objects, the pots, the griddles, the grinding stones, rose up and attacked them, furious after years of abuse. The wooden men fled into the forest. Those, says the Popol Vuh, are the monkeys that exist today.

The fourth attempt was white maize and yellow maize, and that time it worked. The gods took maize dough, ground it, mixed it with water, and from that came the first true humans. With memory, with gratitude, with the ability to say the names of their creators.

The current human race is that fourth attempt.

The peccary appears in this context as one of the animals from the first failure, an inhabitant of Xibalbá, the Maya underworld, witness to all the failed creation attempts. While the Greeks saw in Leo an invincible Lion that immortalized the feat of their greatest hero, and the Egyptians saw the most destructive and most loving goddess at once, the Maya saw an underworld animal that silently reminded them that before us there were three failures. That we are not the original plan. That we are the solution that finally worked.

A dead Lion, a drunk goddess, an underworld peccary. Same stars.

And at the center of all this is a star that has spent thousands of years spinning at the edge of its own destruction, knowing nothing of the stories we’ve invented about it.

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The star at the heart of Leo is spinning so fast it could tear itself apart

Regulus. Alpha Leonis. The brightest star in Leo, the point that marks the Lion’s heart, has been sitting there for thousands of years, steady and bright, while Greeks, Egyptians, Maya, and Chinese invented stories about it. But Regulus is not sitting still. What it’s doing is one of the most extreme things a star can do without destroying itself.

It’s spinning.

Not like the Earth spins, taking 24 hours to complete one rotation on its own axis, nor like the Sun, which takes about 25 days. Regulus completes a full rotation every 15.9 hours. Its equator moves at 320 kilometers per second. For scale: Earth spins at 0.46 kilometers per second at its equator. Regulus spins almost 700 times faster than our planet.

At that speed, gravity starts losing the battle against centrifugal force. The result is that Regulus is not a sphere. It’s an oblate spheroid: flattened at the poles and bulging at the equator, as if you took a ripe orange and pressed it between your palms until the sides pushed out. Its equatorial radius is 32% larger than its polar radius.

Regulus is spinning at 84% of the speed at which it would break apart. If it accelerated just 16% more, gravity would definitively lose the fight. The star would fragment. It would scatter into space. Regulus has been teetering on the edge of its own destruction for thousands of years, while down here we give it the names of kings and emperors without knowing any of this.

There’s something else about Regulus that makes it special in a completely different way.

It’s the brightest star closest to the ecliptic, which is the apparent path the Sun traces across the sky throughout the year. So close that it sits less than half a degree from that path. For scale, the disk of a full moon measures roughly half a degree in the sky. Regulus is so close to the ecliptic that the Moon, in its monthly orbit, periodically covers it completely. Not dims it, not gets close to it. Covers it. Regulus disappears behind the Moon’s disk and reappears on the other side minutes later. That’s called an occultation and it’s visible to the naked eye from anywhere on Earth where it’s nighttime at that moment.

On May 22nd the crescent Moon stood next to Regulus, and on the 23rd next to the entire Leo Sickle. If you saw it, you witnessed exactly the kind of event that astronomers from every civilization obsessively recorded for centuries.

Speaking of other civilizations.

While Hercules and Sekhmet were starring in their respective dramas, the astronomers of the Han dynasty were looking at these same stars and seeing neither a Lion nor a warrior lioness. They saw Xuanyuan, the Yellow Dragon, one of the four celestial creatures that divided the Chinese sky into quadrants. And Regulus specifically had its own name within that system: Huangdi. The Yellow Emperor.

Huangdi was no minor character in Chinese mythology. He was the mythical ancestor of an entire civilization, the legendary founder credited with inventing writing, medicine, the compass, the wheel, and the calendar. He was so central to Chinese identity that his name became the title used by all real emperors for millennia: Huangdi, Son of Heaven.

His star was Regulus.

So the same star that for the Greeks was the heart of a Lion killed by Hercules, and that for the Chinese was the eternal founder of a civilization looking down from the sky, is actually spinning so fast it could fragment at any geological moment. None of the cultures that named it knew this. All of them saw something true in it anyway.

Now drop your gaze a little below Regulus, toward the south and east of Leo, and you’ll find something no mythology ever mentioned because no mythology could see it: three galaxies in the same field of view, each one containing hundreds of billions of stars.

The Leo Triplet: three galaxies 35 million light-years away

M65 and M66 are spiral galaxies, similar in structure to the Milky Way, so close in perspective from Earth that a powerful binocular shows them both in the same field of view. With the Celestron SkyMaster 15×70 you can see them together as two faint oval smudges of light on a moonless night under a dark sky.

The light reaching your eyes at that moment left those galaxies 35 million years ago. At that point no human being existed on Earth, nor anything remotely like one. The first hominids wouldn’t appear for another 33 million years. The light from the Leo Triplet has been traveling longer than our species has existed, and it just finished its journey in your eye.

35 million years of travel to reach your retina. When that light left M65 and M66, primitive primates were living on Earth who had no idea that their distant descendants would one day look up and wonder where they came from.

The third galaxy in the triplet, NGC 3628, is a spiral galaxy seen perfectly edge-on, giving it an elongated narrow shape that astronomers informally call the Hamburger Galaxy. It’s notoriously harder to see than its two neighbors because its surface brightness is very low. Here’s something important that counterintuitively many people don’t know: for objects with low surface brightness like NGC 3628, sky darkness matters more than telescope aperture. A large instrument under light-polluted skies will give worse results than a smaller one under clean rural skies. If you get a chance to leave the city to observe the Leo Triplet, do it. The difference is not subtle.

M65 and M66 show well with the SkyMaster 15×70 or a visual telescope like the Sky-Watcher FlexTube 300P under a dark sky. With NGC 3628 it’s normal to struggle; it’s faint even with good aperture. The Leo Triplet is best observed from February to May, when Leo reaches its highest point. In June it’s still visible in the early evening hours, though already lower on the western horizon.

For astrophotography, the Seestar S50 or the Dwarf 3 are the right tools. The automatic image stacking these smart telescopes perform pulls out details from the Leo Triplet that no human eye can see directly, including the spiral arms of M66 and the dark dust lane that runs across NGC 3628 from side to side.

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The Lion that outlasted everything

Four cultures. None of them knew each other. None of them shared a language, a religion, or a geography. But all of them looked toward the same corner of the spring sky, saw the same group of stars, and placed there what mattered most to them. The Greeks put their greatest hero and his first lesson about turning tragedy into identity. The Egyptians put the most destructive and most loving force they could imagine, and gave both the same face. The Maya put the memory of the failures that preceded our existence, a silent reminder that we are not the original plan but the solution that finally worked. The Chinese put the founder of their civilization, eternal and imperial, looking down from the firmament.

And at the center of all that is a star that knows nothing of any of this. Regulus just spins. It spins at 320 kilometers per second, flattened at its poles, at 84% of the speed at which it would fragment, indifferent to the myths we’ve built around it for millennia. The light it emits takes 79 years to reach us. When you see it shining at the heart of Leo, you’re seeing what that star looked like before you were born.

That’s Leo. Not a drawing in the sky. A mirror in which all of humanity looked for thousands of years and saw different things, all of them true, all of them incomplete, all of them bigger than any one of us.

If you want to keep looking up with us, find us as ASTRONOMIKA TV on YouTube, Instagram, and TikTok. There are more stories waiting for you up there.

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Frequently asked questions about the Leo constellation

When can you see the Leo constellation in the night sky?

Leo is visible in the Northern Hemisphere from February through May, with its peak in April when it reaches its highest point above the horizon after dark. In Latin America, between latitudes 0° and 30° north, it’s well placed during those months. In June it remains observable in the early evening hours, though it gradually moves toward the western horizon.

What star is Regulus and why is it special?

Regulus is Alpha Leonis, the brightest star in the Leo constellation, located 79 light-years from Earth. It’s special for two reasons: it’s the brightest star closest to the ecliptic, which means the Moon periodically passes directly in front of it in events called occultations visible to the naked eye; and it rotates so fast on its own axis (320 km/s) that its shape is not spherical but an oblate spheroid. It is spinning at 84% of the speed at which it would break apart.

What is the Leo Triplet and how can I observe it?

The Leo Triplet is a group of three galaxies, M65, M66, and NGC 3628, located approximately 35 million light-years from Earth. M65 and M66 are visible with powerful binoculars such as 15×70 under a dark sky. NGC 3628 is harder to see due to its low surface brightness; dark skies matter more than aperture for this object. With a smart telescope like the Seestar S50 or the Dwarf 3 all three can be photographed with significant detail.

What is the Greek myth of the Leo constellation?

The Leo constellation represents the Nemean Lion, the first of Hercules’ twelve labors. The Lion was the offspring of Typhon and Echidna, the most terrifying monsters in the Greek pantheon, and its hide was impenetrable to any weapon. Hercules killed it with his bare hands by strangling it in its cave, then used the Lion’s own claws to skin it. The pelt became his iconic armor.

Why did Hercules have to complete the twelve labors?

The twelve labors were imposed by the Oracle of Delphi as penance for killing his wife Megara and his children. The crime was not voluntary: the goddess Hera, enemy of Hercules since birth because he was Zeus’s illegitimate son, sent him a temporary madness that caused him to commit the act without knowing what he was doing. The labors are technically punishment for a crime that Hera herself provoked.

What does Leo represent in Egyptian mythology?

In Egyptian mythology, the stars of Leo are associated with Sekhmet, the lioness goddess and daughter of Ra. According to the myth, Ra sent her to punish humanity for their arrogance, but Sekhmet interpreted the order as total extermination. Ra stopped her by getting her drunk on 7,000 jars of red-dyed beer. Sekhmet subsequently transformed into Hathor, goddess of love, music, and joy.

What did the Maya see in the Leo constellation?

In some Maya traditions of the Classic period, the stars of Leo were associated with the figure of the peccary, an American mammal similar to a wild boar linked to the underworld Xibalbá and to the failed attempts to create human beings described in the Popol Vuh. While Greeks and Egyptians saw a powerful feline, the Maya saw an animal that witnessed three failed creations before the gods finally succeeded in making humans from maize.

What is a stellar occultation and can I see one with Leo?

A stellar occultation happens when the Moon, in its monthly orbit, passes in front of a star and covers it completely for several minutes. Regulus, being the brightest star closest to the ecliptic, is one of the stars most frequently occulted by the Moon. The event is visible to the naked eye: the star disappears instantly behind the Moon’s dark edge and reappears on the other side minutes later. Exact dates for upcoming Regulus occultations can be found on the IAU website or in apps like Sky Guide.

Sources and recommended reading

Books

Allen, R. H. (1899). Star Names: Their Lore and Meaning. Dover Publications. The classic reference for the origin of star names and their cultural history. Essential for any constellation article.

Burnham, R. (1978). Burnham’s Celestial Handbook, Vol. 2. Dover Publications. The most complete observational manual in classic amateur astronomy. Technical data on Regulus and the Leo Triplet verified here.

Apollodorus. Bibliotheca (The Library), Book II. Greek primary source from the 2nd century AD. The most systematic source on the twelve labors of Hercules, including the Nemean Lion.

Tedlock, D. (trans.) (1985). Popol Vuh: The Definitive Edition. Simon & Schuster. The most respected academic translation of the K’iche’ Maya sacred text. Foundation for the entire section on creation and the peccary.

Digital sources

NASA / SIMBAD Astronomical Database. Regulus (Alpha Leonis). simbad.u-strasbg.fr. International astronomical database. Technical data on Regulus rotation, distance, and morphology verified here.

Pinch, G. (2002). Egyptian Mythology: A Guide to the Gods, Goddesses, and Traditions of Ancient Egypt. Oxford University Press. Academic reference for the myth of Sekhmet, Ra, and the transformation into Hathor.

Aveni, A. (1980). Skywatchers of Ancient Mexico. University of Texas Press. The most complete work on Mesoamerican archaeoastronomy. Foundation for the Maya identification of the peccary with the stars of Leo.

International Astronomical Union. Leo Constellation. iau.org. Official boundaries, abbreviation, and reference data for the Leo constellation.