Dragon Scales on Mars! The Rover's Mysterious Honeycomb Discovery
Summary
NASA's Curiosity rover just rolled into a Martian valley covered in millions of tiny honeycomb-shaped cracks that look like dragon scales! Join us on an amazing space adventure to find out how these mysterious polygon patterns formed and why scientists think they are clues to ancient water on Mars.
Transcript
0:00Dragon Scales Discovered
What if I told you that a robot the size of a car just found something on Mars that looks exactly like the skin of a giant sleeping dragon? It is real, it is out there right now, and scientists are jumping out of their chairs with excitement! Picture this: a dusty red valley, quiet for millions and millions of years. Then, rolling slowly over the rocks on six metal wheels, comes a robot explorer named Curiosity. Its cameras blink on, it looks down at the ground, and... whoa! The whole valley floor is covered in millions of tiny cracked shapes, fitted together like a puzzle that goes on forever. Some people say it looks like dragon scales. Others say it looks like a honeycomb built by giant space bees. But here is the best part: those strange little shapes might be secret messages left behind by ancient water! Water? On dusty, dry Mars? Oh yes. But before we solve this mystery, you need to meet the amazing red planet itself. Trust me, Mars is weirder than you think!
0:55Meet Planet Mars
Say hello to Mars, the fourth planet from the Sun and Earth's rusty red neighbor! Why is Mars red? Because its soil is full of iron dust, and that iron has rusted, just like an old bicycle left out in the rain. So when you look at Mars, you are basically looking at a planet covered in rust. How cool is that? Mars is smaller than Earth, about half as wide, but do not let its size fool you. It has the tallest volcano in the whole solar system, called Olympus Mons, and it is almost three times taller than Mount Everest! Mars also has a canyon so long it would stretch all the way across the United States. Wow-fact time: a day on Mars is almost the same as a day on Earth, just about forty minutes longer. Imagine forty extra minutes of playtime every single day! But Mars is freezing cold and super dry today. So how could water cracks be hiding there? To find out, you need to meet the detective of this story: a very special robot.
1:51Meet Curiosity Rover
Meet Curiosity, one of the coolest robots ever built by humans! Curiosity is a rover, which means it is a robot car designed to drive around on another planet. And this is not a tiny toy car. Curiosity is about the size of a real car and weighs almost as much as a small elephant, nearly nine hundred kilograms! It has six chunky wheels, a long robotic arm, seventeen cameras, and even a science laboratory tucked inside its body. That is right, it carries a whole mini lab on its back, like the world's smartest backpack. Curiosity gets its power from a special battery that can keep working for years and years without ever needing to plug into a charger. Wish your tablet could do that, right? NASA scientists built Curiosity to answer one giant question: was Mars ever a place where tiny living things could have survived? But wait. Before Curiosity could explore anything, it had to actually get to Mars. And that journey was one of the wildest rides in space history!
2:51The Wild Landing
How do you deliver a robot the size of a car to a planet that is millions of kilometers away? Very, very carefully! In 2011, Curiosity blasted off from Earth on top of a giant rocket. It zoomed through space for more than eight months, traveling about 560 million kilometers. That is like driving around the whole Earth fourteen thousand times! Then came the trickiest part: the landing. Mars has thin air, so parachutes alone cannot slow a heavy rover down enough. So NASA invented something amazing called a sky crane. A rocket-powered machine hovered in the Martian sky like a helicopter and gently lowered Curiosity down on cables, softly setting its wheels on the ground. It was like a claw machine from space, except the prize was a robot scientist! The whole landing took about seven super-tricky minutes, and when it worked, scientists on Earth cheered, hugged, and even cried happy tears. Curiosity had arrived! But where exactly did it land? In a very special giant bowl with a mountain inside. Wait, a mountain inside a bowl?
3:52Gale Crater Home
Curiosity landed inside Gale Crater, and this place is mind-blowing. A crater is a giant dent made when a space rock slams into a planet. Gale Crater formed billions of years ago, and it is enormous, about 154 kilometers wide. That is so big that if you put a whole city inside it, the city would look like a tiny speck! But here is the strange part: right in the middle of this crater sits a mountain called Mount Sharp, and it rises about five and a half kilometers into the Martian sky. That is taller than most mountains on Earth! Why did NASA pick this spot? Because scientists looking through telescopes and satellites noticed something exciting: the rocks in Gale Crater seemed to be made of layers, like a giant stack of pancakes. And layered rocks are like the pages of a history book. Each layer tells a story about what Mars was like long, long ago. Curiosity's job was to read that rock book, one page at a time. And the very first pages held a watery surprise!
4:52Ancient Lake Clues
Almost as soon as Curiosity started exploring, it found clues that made scientists gasp. Smooth, rounded pebbles, just like the ones you find in a stream on Earth! On our planet, pebbles get round when flowing water tumbles them along, smoothing their edges like nature's rock polisher. Finding round pebbles on Mars meant one thing: a river once flowed right there, billions of years ago! Curiosity kept rolling and found even more. It found minerals that only form in water. It found smooth mudstone, the kind of rock that forms at the bottom of calm lakes. Piece by piece, the puzzle came together: Gale Crater was once home to a real lake, with rivers flowing into it! Imagine standing on Mars billions of years ago with waves gently lapping near your feet. Wow-fact: scientists think that ancient lake may have lasted for millions of years. But lakes do not stay forever. Something happened to all that water. And the dragon-scale valley Curiosity just found might tell us exactly what. First, the rover had to climb!
5:52Climbing Mount Sharp
For years, Curiosity has been slowly climbing up the side of Mount Sharp, and every meter it climbs is like flipping to a newer page in the Mars history book. The lowest rock layers are the oldest, from the watery days. The higher layers are younger, from when Mars was drying out. So by driving uphill, Curiosity is literally driving through time! How fast does it go? Get ready to giggle: Curiosity's top speed is about 0.14 kilometers per hour. A snail could almost race it! A turtle would zoom past like a race car! But there is a good reason for going slow. Mars is covered in sharp rocks and slippery sand, and there are no repair shops on Mars. If a wheel gets badly hurt, no one can drive over and fix it. So Curiosity carefully picks every single step, sometimes moving just the length of a school bus in a whole day. Slow, steady, and smart. And then one day, during this careful climb, the rover rolled into a valley unlike anything it had ever seen.
6:48Sea of Polygons
This is it. The big moment! Curiosity's cameras looked out across the valley floor and captured something incredible: the ground was covered in a gigantic network of cracks, splitting the rock into millions of small shapes with straight edges, all locked together like bathroom tiles. The pattern stretched on and on, as far as the cameras could see, like a sea of stone puzzle pieces. Some shapes had four sides, some had five, and many had six sides, just like the cells in a honeycomb. When the science team saw the pictures, the internet lit up! People said it looked like dragon scales, or crocodile skin, or a giant waffle made of rock. Wow-fact: some of these cracked patterns on Mars have edges that stand up like little walls, because the cracks got filled with harder material, and after ages of wind, the soft rock wore away while the hard crack-fillings stayed standing! But what could carve millions of matching shapes into solid rock? No dragons, we promise. The real answer is even cooler.
7:46Polygon Power
Time for a quick shape adventure, because these Martian mystery shapes have a special name: polygons! A polygon is any flat shape with straight sides. A triangle is a polygon with three sides. A square has four. A pentagon has five, and a hexagon has six. Poly means many and gon means angles, so polygon literally means many angles! Now here is something amazing: nature absolutely loves polygons, especially hexagons. Bees build their honeycombs in hexagons. Snowflakes grow with six arms. There is even a giant storm on the planet Saturn shaped like a hexagon, and it is bigger than two Earths! Why does nature pick these shapes? Because polygons are great at fitting together with no wasted space, like perfect puzzle pieces. Try fitting circles together and you always get gaps. But hexagons? They snuggle together perfectly! So when scientists see fields of polygons on a planet, they know some natural force has been squeezing, stretching, or cracking the ground in a very organized way. On Mars, that force left fingerprints. Let's dust for them!
8:52Mud Crack Magic
To crack this case, we do not even need to leave Earth, because our own planet makes the exact same patterns! Have you ever seen a puddle or a muddy field dry up after the rain? At first the mud is smooth and squishy. But as the sun dries it out, something interesting happens: the mud shrinks. And when mud shrinks, it cannot shrink smoothly, so it cracks! The cracks spread and connect, chopping the surface into little plates with mostly straight edges. Sound familiar? Those are polygons! You can find them at the bottom of dried ponds, in deserts, and even in dried-up puddles on the playground after a rainy week. Wow-fact: in a place called Death Valley in California, there is a famous dried lakebed where the cracked polygons stretch for kilometers, and from the air it looks almost exactly like the pictures from Mars! Scientists call these desiccation cracks, which is a fancy way of saying drying cracks. So if drying mud makes polygons on Earth... what does that tell us about Mars? Hold that thought!
9:48Wet Dry Cycles
Here comes the detective work, so put on your imaginary lab coat! For mud cracks to form, you need three ingredients: mud, water, and drying. Mud gets wet, then it dries and cracks. But here is the twist that made scientists really excited about the Mars polygons: cracking just once makes weak, messy patterns. To make strong, beautiful, honeycomb-style polygons like the ones Curiosity found, the ground needs to get wet and dry over and over and over again! Wet, dry, wet, dry, maybe hundreds or even thousands of times. Each cycle makes the cracks a little deeper and the pattern a little neater, like practicing your handwriting until the letters look perfect. Scientists tested this in laboratories on Earth, wetting and drying mud again and again, and sure enough, the shapes slowly turned into tidy little polygons with special Y-shaped corners. And guess what Curiosity's cameras spotted in the Martian cracks? Those same Y-shaped corners! That was the smoking-hot clue. But what do wet-dry cycles actually tell us about ancient Mars? Something huge!
10:51Why Water Matters
Ready for the big idea? Those wet-dry cycles mean ancient Mars had seasons of water, kind of like weather! Maybe rivers rose and fell. Maybe there were rainy times and dry times, or floods that came and went, over and over. That means Mars was not just wet once and then done. It was a lively planet with a real water cycle, where water moved around, disappeared, and came back again and again! Why is that such a big deal? Because on Earth, scientists believe that this exact kind of wet-dry rhythm may have helped the very first building blocks of life come together, billions of years ago. Wet times let special molecules float and mix, and dry times squeezed them together so they could connect, like a cosmic recipe: stir, then bake, then stir again! Wow-fact: the Martian polygons Curiosity found are ancient, formed around three point six billion years ago. That is older than almost any mud crack you could ever find on Earth! So Mars once had busy, splashing, drying water. Where on Mars did it all happen?
11:52When Mars Was Wet
Let's rewind time and imagine Mars almost four billion years ago. Close your eyes... well, keep them open so you can watch, but imagine! The sky might have had clouds. Rivers wound across the land like shiny ribbons. Lakes filled the craters, and some scientists think there may even have been a huge ocean covering part of the northern half of the planet! Gale Crater, Curiosity's home, held its own lake, with streams tumbling down the crater walls carrying sand and mud. Along the edges of that lake, the ground got soaked when water rose and dried out when water dropped. Season after season, year after year, the mud cracked into polygons, and the polygons grew neater and deeper. Then, slowly, new layers of sand and dust buried the cracked mud, sealing the pattern away like a letter in an envelope, saved for billions of years. Wow-fact: some of the water molecules that once splashed on Mars may still be there today, hiding in ice and rocks! So hold on... where did the rest of the water go?
12:50The Vanishing Water
Here is one of the biggest mysteries in the whole solar system: Mars lost most of its water! But how do you lose a planet's worth of lakes and rivers? Scientists think it happened like this. Mars is smaller than Earth, and long ago its metal heart, its core, cooled down. When the core cooled, Mars lost most of its magnetic shield, an invisible force field that protects a planet from the Sun's powerful particle wind. Earth still has its shield, and that is one reason we still have our air and oceans! Without a strong shield, the solar wind slowly blew away much of Mars' atmosphere, puff by puff, like someone letting the air out of a balloon over millions of years. With thin air and cold temperatures, the water could not stay liquid. Some escaped into space. Some froze into ice caps and underground ice. Some got locked inside rocks. Wow-fact: Mars still has enough ice at its poles that if it all melted, it could cover the planet in water! Now, how did Curiosity study those cracks up close?
13:51Robot Super Eyes
Curiosity does not just take pretty pictures. It is packed with super-tools, like a science superhero! First, the cameras. The Mastcam sits up on the rover's neck like a pair of eyes and takes gorgeous color photos of the landscape. Then there is MAHLI, a camera on the end of the robotic arm that works like a magnifying glass, getting so close to rocks that it can see details smaller than a grain of sand! When Curiosity found the polygon valley, it drove right up to the cracks and leaned in with MAHLI for extreme close-ups. The pictures showed the crack edges in amazing detail, including minerals that had filled the cracks like frosting piped into the grooves of a cookie. Wow-fact: Curiosity has taken hundreds of thousands of images since landing, and it even takes selfies! It stretches out its arm camera and snaps photos of itself standing proudly on Mars, then scientists stitch them together. Say cheese, robot! But cameras were only the beginning. Wait until you hear about the laser!
14:51The Science Laser
Yes, you heard right: Curiosity has a science laser, and it is awesome! The tool is called ChemCam, and it sits at the top of the rover's mast like a wizard's eye. Here is how it works: ChemCam fires a tiny, super-focused beam of light at a rock, up to about seven meters away. The beam is so concentrated that it zaps a speck of the rock into a little puff of glowing gas, just a spark smaller than a pencil dot. Then, and this is the genius part, a special camera studies the colors of light in that tiny spark. Every ingredient, like iron, salt, or calcium, glows with its own secret color code, like a fingerprint made of light! So by reading the colors, scientists can tell exactly what a rock is made of without even touching it. When Curiosity zapped the polygon cracks, the light-fingerprints revealed salts and minerals left behind by evaporating water. More proof of the wet-dry story! And when zapping is not enough? Time to bring out the drill!
15:49Drilling for Secrets
Deep inside every rock is a story, and Curiosity's drill is the key that unlocks it. At the end of the rover's two-meter robotic arm sits a powerful drill that can chew a small hole into solid Martian rock. As it drills, it collects soft rock powder, and that powder is pure treasure! The arm carefully delivers pinches of powder into little doorways on the rover's back, where the onboard laboratories get to work. One lab, called CheMin, shoots X-rays through the powder to figure out which minerals are inside. Another lab, called SAM, actually bakes the powder in a tiny oven, hotter than any pizza oven, and sniffs the gases that puff out! By sniffing rock-smells, SAM can detect water hiding in minerals and even special carbon ingredients. Wow-fact: SAM is one of the most complicated instruments ever sent to another planet, with more than six hundred parts squeezed into a box the size of a microwave! So the polygons got photographed, zapped, and drilled. But who tells Curiosity what to do?
16:52Mission Control Team
Every single day, a team of scientists and engineers on Earth plans Curiosity's adventures, and their job is wilder than you might think! Here is the tricky part: Mars is so far away that radio messages take between about five and twenty minutes to travel there, even moving at the speed of light. So you cannot drive Curiosity with a joystick. By the time you saw a rock and yelled turn left, the rover would have already bumped into it minutes ago! Instead, the team writes a full to-do list each day: drive here, photograph that, zap this rock, then nap. They beam the list to Mars, and Curiosity follows it all by itself like the world's best homework-doer. The next morning, the rover sends back its photos and results, and the scientists gather around like kids opening presents! Wow-fact: some team members even lived on Mars time for months, shifting their sleep forty minutes later every day to match Martian days. Imagine your bedtime moving every night! So what did the team decide to do about those dragon scales?
17:52Investigating the Valley
The team turned the dragon-scale valley into a full science investigation! First, Curiosity photographed the polygon field from far away to map how big it was. The pattern covered an area with millions of the little shapes, most of them just a few centimeters across, about the size of your palm. Then the rover crept closer for detail shots, then closer again for microscope views, like zooming in on a treasure map: continent, island, then the X that marks the spot! ChemCam zapped the ridges. The arm instruments measured the chemistry. And the results all sang the same song: these cracks formed in ancient mud that got wet and dry many, many times, and water left salty minerals behind in the cracks as it evaporated. One scientist said finding this kind of evidence was like finding a page of Mars' diary from the exact chapter where the planet was changing from wet to dry. Wow-fact: this cracked mud layer sat hidden for over three billion years before a robot from Earth rolled up to read it! But could anything have lived there?
18:54Could Life Exist
Now for the question everyone asks: did anything ever live on Mars? Here is the honest, exciting answer: we do not know yet, and that is exactly why we keep exploring! Scientists are not looking for aliens with big eyes or little green space suits. They are looking for signs of microbes, which are teeny-tiny living things so small you would need a microscope to see even one. Your own hands are home to millions of friendly microbes right now! On Earth, microbes are super tough. They live in boiling hot springs, in super salty lakes, deep underground, and even inside rocks. So if ancient Mars had lakes, rivers, and cozy mud for millions of years, it may have had comfortable homes for microbes too. Curiosity has already proven that Gale Crater once had the right water, the right chemistry, and the right ingredients, including carbon, the building block of life as we know it. The polygons add another piece: those wet-dry cycles that might help life's ingredients connect! The mystery is still open. And more robot detectives are on the case!
19:54Robot Explorer Family
Curiosity is not alone on Mars! Meet its younger cousin, Perseverance, a rover that landed in 2021 in a different crater called Jezero, which used to hold a lake with a river delta. Perseverance has a special mission: it collects the best rock samples, seals them inside super-clean metal tubes, and leaves them ready so that a future mission might one day fly them back to Earth! Imagine holding a piece of Mars in a laboratory right here on our planet. And get this: Perseverance brought a tiny helicopter friend named Ingenuity. Ingenuity became the first machine ever to fly on another planet! It was only supposed to fly five times, but this brave little chopper flew seventy-two times, zipping over the red dunes like a happy dragonfly. Wow-fact: flying on Mars is extra hard because the air is about one hundred times thinner than Earth's, so Ingenuity's blades had to spin around 2,500 times every minute! Rovers, helicopters, orbiters circling above... Mars is getting crowded with robot explorers. And guess who might visit next?
20:58Humans on Mars
One day, the next explorer on Mars might not be a robot at all. It might be a human. It might even be you! Space agencies around the world are working on plans to send astronauts to Mars in the future. It would be the greatest road trip ever: about seven months of travel each way! Astronauts on Mars would need special suits, because the air is too thin to breathe and the average temperature is a frosty minus sixty degrees Celsius. Brrr! They would live in special habitats, grow food inside greenhouses, and maybe use Martian ice to make drinking water. And here is where our polygons come back into the story: understanding where Mars' water went, and where ice hides today, helps future astronauts know where to land and live! Wow-fact: the first person to walk on Mars is probably alive right now, and they might be a kid in school today. Someone who loves space, asks big questions, and never stops wondering. Sound like anyone you know? Now, want to make your own Mars polygons at home?
21:56Make Mars Mud
Science experiment time! You can grow your very own dragon-scale polygons in your kitchen, and all you need is dirt, water, a tray, and a sunny window. First, ask a grown-up to help you. Then mix some plain soil or mud with water in a bowl until it is smooth and gloopy, like melted chocolate, but please do not taste it! Pour the mud into a shallow tray or an old plate, about as thick as a cookie. Now place it somewhere warm and sunny, and wait. This is the hard part, because science takes patience! Over a day or two, as the water evaporates, the mud will shrink and, crack by crack, polygons will appear, just like on Mars! Want to level up like a real Mars scientist? After it cracks, gently add a little more water, let it dry again, and watch how the pattern changes with each wet-dry cycle. Congratulations, you just recreated a three-point-six-billion-year-old Martian mystery on your windowsill! But before we finish, there is one more twist in this story...
22:50Solving the Mystery
Here is the twist: the polygon mystery is not fully solved, and scientists love that! Because on Mars, cracked polygon shapes can form in more than one way. Drying mud makes polygons, yes. But freezing and thawing ice can also crack the ground into polygons, and Mars has plenty of those near its cold poles, some as big as swimming pools! Even cooling lava can crack into polygon columns, like the famous Giant's Causeway in Ireland, where forty thousand stone columns fit together like a giant's stepping stones. So how do scientists know the dragon scales in Gale Crater came from drying mud and not ice or lava? Detective work! The rock type was mudstone from a lake, not lava rock. The cracks had those special Y-shaped corners that come from many wet-dry cycles. And the cracks were filled with salts that water leaves behind when it evaporates. Every clue pointed to water. That is how real science works: you do not just guess, you test every idea until the evidence agrees! Ready for the grand recap?
23:53One Amazing Robot
Let's zoom back and think about how wild this whole story is. Right now, at this very moment, there is a robot on another planet. It survived a rocket launch, an eight-month space journey, and a sky-crane landing. It has been exploring for years, driving farther than a marathon across sand and stone. It found round river pebbles, an ancient lake, and now a valley of dragon-scale polygons that whisper stories of water from three point six billion years ago. And here is the part that gives me happy goosebumps: everything Curiosity discovers was found because humans got curious and refused to stop asking why! Wow-fact: when Curiosity landed in 2012, it played itself a little birthday song on its first anniversary, using one of its instruments to hum happy birthday. It was the loneliest, sweetest birthday party in the solar system, one robot, humming to itself, 225 million kilometers from home. But it is not lonely in the way that matters, because millions of people, including you, are following its journey. So what did we learn today? Let's collect our treasure!
24:57The Big Recap
Treasure chest time! Here are the coolest things you discovered today. One: Mars is red because it is rusty, and it hides the tallest volcano in the solar system. Two: Curiosity is a car-sized robot scientist that landed using an amazing rocket sky crane. Three: the rover found a valley covered in millions of polygon cracks that look like dragon scales or honeycomb. Four: those polygons formed when ancient mud got wet and dried out, over and over, billions of years ago, proof that Mars once had seasons of flowing, splashing water! Five: wet-dry cycles like that might even be nature's recipe for mixing the building blocks of life. Six: Mars lost most of its water when its magnetic shield faded, but ice still hides at its poles and underground. And seven: robots like Perseverance and the brave little helicopter Ingenuity are still exploring right now, paving the way for human explorers, maybe even you! That is a lot of space treasure for one adventure. Now, before you go, here is your special mission...
26:03Your Space Mission
Your mission, space explorer, starts tonight! Mission part one: try the mud polygon experiment with a grown-up, and watch a tiny piece of Mars science happen on your own windowsill. Mission part two: amaze your family at dinner with this fact: NASA's rover found millions of tiny dragon-scale cracks on Mars, and they prove the red planet once had rainy-style wet seasons billions of years ago! Watch their eyes go wide. Mission part three: next time the sky is clear, look up. Mars is sometimes visible as a small reddish star that does not twinkle much. When you spot it, remember: on that little red dot, a robot named Curiosity is parked in a valley of stone dragon scales, waiting for sunrise so it can keep exploring, just for us. Every great scientist started exactly where you are right now: curious, wondering, and asking one more question. So keep looking up, keep asking why, and never stop exploring. The universe is enormous, and it is full of mysteries with your name on them. See you on the next adventure!
27:02Bonus Boxwork Mystery
Wait, one more bonus mystery before you blast off, because you have earned it! Scientists studying the polygon valley noticed that Mars keeps surprising us in new places too. Farther up Mount Sharp, Curiosity recently rolled into an area with strange low ridges arranged in giant web-like patterns called boxwork, like a spiderweb made of stone stretching across the hills, and some of those patterns are so large you could only see the whole design from the sky! Scientists think groundwater, water hiding under the surface, once flowed through cracks there, leaving hard minerals behind like glue in the seams. That means water did not just sit in lakes on ancient Mars. It also crept and trickled underground, maybe long after the lakes dried up! Underground water is extra exciting because on Earth, underground places stay cozy and protected, perfect hideouts for tough little microbes. Could ancient Martian microbes have snuggled underground as the surface dried? Nobody knows yet. That question is still waiting, maybe for a future scientist watching this right now. Mystery to be continued!
28:07You Saw Mars
And finally, the biggest wow of all: you are part of this story. Every photo Curiosity takes gets beamed across millions of kilometers of space, caught by giant antennas on Earth, and shared with the whole world, including you, sitting right where you are. When you looked at those dragon-scale polygons today, your eyes saw sunlight that bounced off Martian rocks, into a robot's camera, through space, and onto your screen. You basically just looked at Mars up close, without leaving your room! A hundred years ago, nobody on Earth had ever seen the surface of Mars clearly. Now kids everywhere can explore it after school. That is how fast discovery moves, and it is speeding up because of curious minds like yours. Wow-fact: NASA even lets people follow along as new raw photos arrive from Mars almost every day, so scientists sometimes make discoveries at the same time as everyone else! The dragon-scale valley was hidden for three point six billion years. It waited all that time... just to meet a curious robot, and a curious you.
29:06Goodnight Mars
So tonight, when you snuggle into bed, think about this: two worlds, side by side in space. On one world, you, warm and cozy, drifting off to sleep. On the other world, a faithful robot, parked quietly in a valley of stone dragon scales under a butterscotch-colored sky, its batteries humming softly, waiting for the pale blue dot in its sky, that is Earth, that is us, to send tomorrow's plan. Two explorers, one made of metal and one made of curiosity, working on the same giant puzzle: where did the water go, and was anybody ever home? Every crack in that Martian mud is a word in a story billions of years old, and we have only read the first few pages. The next pages belong to the scientists, engineers, and dreamers of tomorrow. Maybe one of those pages belongs to you. Sweet dreams, space explorer. Dream of red valleys, honeycomb rocks, and rivers that flowed before dinosaurs ever walked the Earth. The universe is waiting, and it saved you a seat. Goodnight, Mars. Goodnight, Curiosity. And goodnight, you!
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Series: science (English)