1

Ancient origins

Image: Ameer Basheer

The Grand Canyon isn’t just old—it’s millions of years older than previously thought. Some rock layers at the bottom date back 1.8 billion years, nearly half the age of Earth itself. While the canyon itself is around 5 to 6 million years old, recent studies suggest parts of it began forming 70 million years ago—during the dinosaur era.

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Once an ocean floor

Image: Yannis Papanastasopoulos

Long before it was a canyon, this region sat beneath an ancient sea. The Kaibab Limestone, the canyon’s top layer, formed from marine fossils left behind as the waters receded 270 million years ago. The presence of coral, shellfish, and even shark fossils proves the area was once home to a thriving ocean ecosystem.

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Carved by more than water

Image: Wolfgang Hasselmann

While the Colorado River played a huge role in shaping the canyon, other forces were at work. Volcanic activity, tectonic uplift, and even landslides helped carve out its immense depths. Lava flows from nearby volcanoes poured into the canyon, creating layers of rock that tell the story of violent geological change.

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The earliest human inhabitants

Image: Russ McCabe

Humans have lived near the Grand Canyon for at least 12,000 years. The earliest known inhabitants were Paleo-Indians, who left behind stone tools and spear points. Later, the Ancestral Puebloans built cliff dwellings and left behind intricate pottery, proving that this seemingly inhospitable land was once home to thriving communities.

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First European encounter

Image: Antoine Vidal de La Blache

Spanish explorer García López de Cárdenas was the first European to lay eyes on the canyon in 1540. Sent by Francisco Vázquez de Coronado in search of legendary cities of gold, he and his men were shocked by its vastness. They tried to climb down for water but failed, unable to comprehend its sheer scale.

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Named a national monument

Image: Benjamin Cutting

President Theodore Roosevelt designated the Grand Canyon a national monument in 1908, calling it a place "every American should see." He was instrumental in protecting it from commercial exploitation, setting the stage for its eventual National Park status in 1919.

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Hidden caves

Image: Russ McCabe

The Grand Canyon contains over 1,000 caves, but fewer than 400 have been explored. Some remain completely untouched, preserving prehistoric fossils and evidence of ancient human life. Today, only one cave is open to the public—Grand Canyon Caverns, located nearby in Arizona.

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Phantom ranch

Image: Annie Spratt

Built in the 1920s, Phantom Ranch remains one of the most isolated lodges in America. Located at the bottom of the canyon, it’s only accessible by hiking, mule ride, or rafting. Due to high demand, reservations are awarded through a lottery system.

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America’s first canyon explorer

Image: Alex Moliski

John Wesley Powell led the first recorded expedition through the Grand Canyon in 1869. With one arm lost in the Civil War, he braved the Colorado River’s treacherous rapids in wooden boats. His journey mapped the canyon’s uncharted territory, proving it wasn’t an impassable wasteland but a geological treasure trove.

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Forgotten civilizations?

Image: Otacilio Maia

In the 1930s, explorer Emery Kolb uncovered a sealed cave in the canyon containing ancient artifacts and human remains. Some speculated it belonged to a lost civilization, but archaeologists determined it was a prehistoric Native American site. The canyon still holds thousands of undiscovered archaeological sites, adding to its mystery and historical significance.

1

The Joker

Image: Miggy Rivera

We’ll start with comic books’ most nefarious villain . Should an alien visit us tomorrow, it would be very hard to explain that a playing card-themed maniac is an archetypical antagonist to a bat-themed superhero. And yet, ever since appearing in Batman’s very first solo comic book, the Joker has proved again and again why he is known as "the Clown Prince of Crime".

Just like Batman, the Joker doesn’t have any superpowers besides his cunning and wicked sense of humor. Although definitively insane, he is remarkably smart, which is shown by his expertise as a chemist. He is responsible for creating his signature "Joker venom", a chemical compound capable of forcing anyone to smile.

2

The Green Goblin

Image: Uélvis Santana

The Green Goblin is to Spiderman what The Joker is to Batman. Another bad guy with a flare for theatricality (though almost all comic-book villains do), this flying menace soars through the air on his "Goblin Glider", his patented flying device.

Contrary to his superhero antagonist, this villain’s backstory is simple and selfish: wealthy industrialist Norman Osborn became this alter-ego to rule organized crime in New York City. Nowadays, Willem Dafoe’s portrayal of the Green Goblin in the 2001 "Spiderman" movie is perhaps this character’s most remembered iteration.

3

Hans Gruber

Image: Matt The Artist

There are many reasons why "Die Hard" is considered the very best action movie in history, from its groundbreaking setting to its amazing dialogue and fast-paced action. However, one of the most influential factors behind this movie’s legacy is Hans Gruber , the sophisticated and soft-spoken nemesis of John McClane.

Wonderfully portrayed by Allan Rickman, Gruber arrives at the fictional Nakatomi Plaza under false pretenses, with the sole purpose of stealing millions in bearer bonds. Rickman's superb performance almost made us feel bad when his plans got foiled by a certain adventurous NYPD detective. An action movie that made us feel bad about its bad guy! Can you imagine that?

4

Darth Vader

Image: André Volkmann

Should we add a spoiler warning for one of the most iconic reveals in the history of cinema? We won’t disclose it in the very (extremely) slim chance that you haven’t seen "The Empire Strikes Back". However, we are absolutely sure that you are familiar with science fiction's most memorable villain, even if you haven’t seen a single scene in any "Star Wars" movie.

Truly, Darth Vader needs no introduction: From his menacing mask, cold demeanor, and lightsaber skills, this Sith knight is truly a force to be reckoned with. What’s perhaps most iconic about Vader is his deep and powerful voice, provided by Hollywood legend James Earl Jones.

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Wicked Witch of the West

Image: Ksenia Yakovleva

Granted, the 2003 musical "Wicked" made us realize that Elphaba, also known as "The Wicked Witch of the West" , was a truly nuanced character. However, by the time she received her dishonorable title in "The Wizard of Oz", Elphaba had become a dastardly green-skinned witch, hellbent on foiling the plans of Dorothy and her friends.

Margaret Hamilton’s performance in the 1939 version of "The Wizard of Oz" was so iconic that it cemented the look that most media witches would have over time: You can thank Hamilton for the pointy black hats, green make-up, and terrifying cackles you hear every Halloween.

6

Norman Bates

Image: Maxime Roedel

Just like with our Darth Vader entry, we have to ask: Is anyone not aware of the groundbreaking twist in Alfred Hitchcock’s most famous movie? We’ll once again have to tread lightly, but that doesn’t mean we can properly remember Norman Bates , the bone-chilling villain from "Psycho".

Portrayed by Anthony Perkins in the original 1960 movie and its 3 sequels, Norman Bates is the shy, mild-mannered proprietor of the "Bates Hotel", co-owned by Norman and his mother. However, anyone watching this classic thriller for the first time will quickly realize that there’s something sinister hiding in this hotel.

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Hannibal Lecter

Image: Elchino portrait

You would expect someone nicknamed "Hannibal the Cannibal" to be a feral brute with an insatiable bloodlust, but Dr. Hannibal Lecter is, above all, well-mannered. While he definitively has the bloodlust part going, Lecter has been described as a soft-spoken, intelligent, and cultured monster since his first appearance in the 1981 horror novel "Red Dragon".

Most of us remember this character from Anthony Hopkins’ character in "Silence of the Lambs" and "Red Dragon", but did you know that there was a previous film portrayal of Hannibal Lecter? Scottish actor Brian Cox portrayed him in the 1981 film "Manhunter", although under the last name "Lecktor".

8

Xenomorphs

Image: Hossam el-Hamalawy, CC BY 2.0

When posters for the movie "Alien" first appeared in movie theaters, they had a simple yet terrifying tagline: "In space, no one can hear you scream". This 1979 horror masterpiece by Ridley Scott introduced the world to the now-iconic "Xenomorph", the perfect killing machine that haunts outer space.

Part of what makes the Xenomorph so memorable is its groundbreaking design, a huge departure from the traditional aliens depicted up to that point. It helps that they were designed by Swedish artist H.R. Giger, who in turn based them on his own 1976 surrealist painting "Necronom IV".

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Lex Luthor

Image: Jon Tyson

Who knew that the perfect nemesis for "The Man of Steel" would be a bald billionaire? Lex Luthor is Superman’s lifelong and most-famous nemesis, always plotting to bring the world’s most powerful superhero to his knees.

In a way, the fact that Luthor has no superpowers other than his remarkable intellect is particularly fitting: While heavy-hitters like Doomsday or Metallo can physically hold their own against Superman, Luthor’s human greed and resourcefulness ultimately prove to be the biggest threat to this hero.

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HAL 9000

Image: Axel Richter

We’ll end with the only robotic villain in this article. When audiences first met the artificial intelligence known as HAL 9000 in Stanley Kubrick’s groundbreaking "2001: A Space Odyssey", they were perplexed by how a single red light talking in a monotone yet calm voice could be so downright terrifying.

In truth, that’s part of what makes HAL such an incredible villain: He is not a sadistic, murderous monster, but rather a cold and calculating machine run by logic. HAL chooses to destroy the astronauts aboard the "Discovery One" only because he considers them a threat to the spacecraft’s plans. So, in a sense, this machine was only doing what it was programmed to do.

1

"One small step" vs. "Man, that may have been a small one…"

Neil Armstrong stepped onto the lunar surface with his carefully planned line: "That is one small step for a man , one giant leap for mankind." Pete Conrad from Apollo 12 decided to have some fun with that.

Conrad was short, and he had bet a reporter five hundred dollars that he could say whatever he wanted when he stepped down. This is the line he went for, as documented in NASA transcripts: "Whoopie! Man, that may have been a small one for Neil, but that is a long one for me ."

2

Apollo 12 and the lightning strike that tried to end everything

Apollo 12 was struck by lightning not once but twice, only 36 seconds after launch. The electrical surge wiped out telemetry in Mission Control.

The flight looked doomed until flight controller John Aaron said the now legendary instruction: "Try SCE to Aux." Conrad responded with, "What the hell is that?" because almost no one remembered what SCE meant.

Luckily, Alan Bean understood what to do. He flipped the switch, the instruments rebooted, and Apollo 12 kept flying.

3

Apollo 13 was just as dramatic as the movie showed

The explosion of an oxygen tank in Apollo 13’s service module really did turn the mission into a race against time. The line "Houston, we have a problem" is Hollywood’s adaptation, however. The real line, spoken by Jack Swigert and repeated by Jim Lovell, was "Houston, we have had a problem."

Other real drama: the crew used the Lunar Module as a lifeboat, battled rising CO₂ levels, manually aligned the spacecraft using Earth’s horizon, and returned home with only a sliver of battery life left.

4

Apollo 16 astronauts drove a moon rover like teenagers with a new car

The lunar rover was a marvel: lightweight, foldable, and capable of reaching 13 to 18 km/h depending on conditions.

John Young and Charlie Duke from Apollo 16 were so thrilled with it that Mission Control had to repeatedly remind them not to drive too fast on uneven terrain.

Duke even recorded one of the wildest moments of the program when Young yelled, "Look at that… look at that!" as dust flew up behind them.

5

The dust that drove astronauts nuts

Moon dust is sharp, sticky, and electrostatically clingy. Astronauts from Apollo 11 onward complained that it smelled like burnt gunpowder and got everywhere. Harrison Schmitt from Apollo 17 suffered "lunar hay fever" after breathing dust tracked into the cabin.

NASA later became mildly obsessed with studying how dangerous that dust might be… and it turns out it is genuinely abrasive to suits and could be risky to lungs.

6

Apollo 11 and the computer that said "nope"

Just minutes before landing on July 20, 1969, the Apollo Guidance Computer flashed a "1202" program alarm. In non-NASA terms, the computer was overloaded and essentially panicking .

But guidance officer Steve Bales had trained for this exact situation and cleared the crew to proceed. Armstrong later said this call was one of the mission’s most decisive moments. So yes, the first Moon landing almost got canceled by a stressed-out computer.

7

The golf shot that echoed through history

On Apollo 14, Alan Shepard smuggled a makeshift golf club head along with two golf balls.

On the moon, he attached it to a sample collection tool and made the most famous swing in the Solar System. The ball truly did travel far, although probably not the "miles and miles" Shepard joked about. Still, it remains the only round of lunar golf ever played.

8

Apollo 15’s postal controversy

The Apollo 15 astronauts carried unauthorized stamped envelopes to sell to collectors later.

This became a scandal when the deal came to light. NASA was furious, the crew was reprimanded, and the agency tightened rules on what astronauts could take to space.

The event is fully documented and remains one of the strangest side stories of the program.

9

Twelve people walked on the moon

Between 1969 and 1972, exactly twelve astronauts walked on the lunar surface.

The list, in chronological order, is: Armstrong, Aldrin (Apollo 11), Conrad, Bean (Apollo 12), Shepard, Mitchell (Apollo 14), Scott, Irwin (Apollo 15), Young, Duke (Apollo 16), and Cernan and Schmitt (Apollo 17). Cernan remains the last human to have walked on the Moon.

10

The last moonwalk included a love letter

During Apollo 17, Gene Cernan traced his daughter’s initials TDC on the lunar dust.

As he said his farewell words on the Moon, he hoped the world would continue exploring. His last line: "We leave as we came and, God willing, as we shall return, with peace and hope for all mankind."