UTC Challenger STEM Learning Center

Have you ever wondered why your shadow seems to dance across the ground as the day progresses? It is all because our home planet is constantly spinning on its axis, like a giant top rotating through space. As Earth turns, the angle of the sunlight hitting your specific spot in Chattanooga shifts continuously, which changes the direction and length of shadows cast by stationary objects. This reliable movement is the fundamental clock of the natural world.

🚀 To see this physics in action, try making your own sundial. First, push a pencil through the center of a paper plate. Second, find a sunny spot outside and place the plate flat on the ground. Third, use a compass or a watch to align your plate and mark the shadow position every hour with a marker. Finally, watch as the Sun's position maps out time right before your eyes!

👟 Grab your gear and head over to the UTC campus to test your new sundial! The open green spaces near the library are perfect for catching the sun as it tracks across our sky. See if you can keep time as accurately as the ancient astronomers did. Did you know this? Drop a 🚀 in the comments!

What an incredible legacy we are celebrating this month! It has been over two decades since the very first crew moved onto the International Space Station, marking the start of a permanent human presence in orbit. This mission, Expedition 1, proved that nations could work together to push the boundaries of what is possible in science and discovery. 🚀

Being on the ISS means living in a state of microgravity, where objects and astronauts seem to float as if they are constantly falling around the Earth. It is like being in a perpetual, high-speed elevator ride where the cable has been cut, but you are moving sideways so fast that you never actually hit the ground! This unique environment allows researchers to conduct experiments that are impossible to perform on the surface of our planet.

Today, the station continues to be a bustling hub of international cooperation, with astronauts from all over the world living and working side-by-side. It is a powerful reminder that when we collaborate, we can solve complex challenges. Right here in the Scenic City, you can witness this history in motion. Step outside your home, look up at the Tennessee Valley sky, and try to spot the ISS as it zips overhead like a bright, moving star. It is a fantastic way to spark a conversation with your young scientists about our future in the stars! 🔭

Ever wonder how massive bridges stay standing under the weight of thousands of pounds of traffic? It comes down to structural integrity and one shape that reigns supreme in engineering: the triangle. 🚀

Unlike squares or rectangles, which can collapse into parallelograms under pressure, a triangle is inherently rigid. When you press down on one side, that force is distributed evenly through the sides and into the base, preventing the structure from buckling. Engineers use these geometric trusses to create strength without adding unnecessary weight, effectively spreading the load across the entire span.

Think you have what it takes to span the Tennessee River? Test your skills with this civil engineering challenge. Grab a box of toothpicks and a bag of mini marshmallows.

1. Build a series of triangles using toothpicks as beams and marshmallows as joints.

2. Connect these triangles to form a truss beam at least 10 inches long.

3. Place your bridge between two stacks of books and slowly add weight, like coins, to the center to see how much load your span can handle.

We love seeing our future engineers test their designs right here in the Scenic City. Share your bridge results in the comments and let us know if your design can handle the weight of the Walnut Street Bridge! 🔭

What if a single volcano was large enough to swallow the entire state of Tennessee? 🚀

Welcome to Olympus Mons, the absolute titan of our solar system. Located on Mars, this shield volcano stands nearly 72,000 feet tall—that is more than two and a half times the height of Mount Everest. To put that in perspective for our Scenic City explorers, it would make our beloved Lookout Mountain look like a mere pebble in the road.

🔭 Here is how this geological giant stacks up:

* Its base spans roughly 370 miles in diameter, essentially covering the entire land area of Tennessee if it were dropped onto our home state.
* Because it is so wide, if you stood on the edge, the slope is so gradual that you wouldn't even realize you were climbing a mountain.
* Scientists have mapped this landscape using high-resolution data from NASA’s Mars Reconnaissance Orbiter, helping us understand why volcanic activity behaves so differently in low gravity.

At the UTC Challenger STEM Learning Center, we use this kind of planetary data to help students simulate missions to the Red Planet. It is one thing to read about Martian geology in a textbook, but it is another to analyze the landscape while planning a landing zone for a simulated rover mission right here in Chattanooga.

Did you know the scale of our universe is this massive? Drop a 🚀 in the comments!

🚀 Did you know that some materials can defy the laws of physics right in your kitchen? This is the science of non-Newtonian fluids, like our favorite sticky substance, Oobleck! Unlike water, which flows steadily no matter how hard you stir it, Oobleck changes its viscosity based on the force applied to it. When you hit it, the particles lock together and act like a solid, but when you let it sit, it flows like a liquid. Imagine you are an engineer at the UTC Challenger Center tasked with designing a rover to drive across a mysterious alien planet covered in this strange, shifting goo. How would you adjust the rover's speed to ensure it stays on the surface rather than sinking into the mud? 🔭

Try this at home to test it yourself:

1. Pour two cups of cornstarch into a large mixing bowl.

2. Add one cup of water slowly, stirring as you go until the mixture reaches a thick, goopy consistency.

3. Punch the surface of the Oobleck to see it resist, then slowly dip your fingers in to feel it turn back into a liquid.

We love seeing our future scientists experimenting at home! Share your Oobleck results and tag us to show how you tackled the alien terrain challenge. Whether we are exploring space missions here in the Scenic City or mixing up physics experiments, we are always pushing the boundaries of what is possible.

🚀 What an incredible legacy we get to share with our students today! When we think of Dr. Mae Jemison, we think of the first African American woman in space, but her story is so much more than just one historic mission. She is a powerhouse of curiosity who proved that you never have to choose between being a scientist, a physician, or a dancer.

👟 During the 1992 Space Shuttle Endeavour mission, STS-47, she didn't just conduct scientific research in orbit; she brought her whole, creative self to the table. She showed the world that STEM is not just about equations, but about the human imagination, rhythm, and passion that drive discovery forward.

🌟 Here at the UTC Challenger Center, we tell our students that they don't have to fit into one box. Whether you love the engineering behind a rocket or the grace of a dance studio, there is a place for your talents in the future of space exploration. We love seeing our Chattanooga kids lean into their full potential, just like Dr. Jemison!

On this day in 1961, President John F. Kennedy stood before Congress and proposed the seemingly impossible goal of landing a man on the Moon before the decade was out. This wasn't just a political promise; it was a massive dare to the world of physics, requiring thousands of scientists to master the complex mathematics of flight trajectories and orbital mechanics to turn a wild dream into a reality. From the early days of the Apollo program, we learned that hitting a target in space requires absolute precision and an understanding of how gravity and velocity dance together.

🚀 You can explore these same principles right at home by building a straw-blown paper rocket. Cut a small strip of paper and wrap it around a straw, taping one end shut to create a nose cone. Once you have your rocket, try launching it at different angles—15, 45, and 75 degrees—to see which angle hits a target across the room. Measure your distance and calculate which trajectory provided the longest flight.

🔭 Just as those early NASA engineers charted their course from mission control, we encourage our local students here in Chattanooga to set their own big goals. Whether you are looking out across the Tennessee River or dreaming of the stars, remember that every great leap begins with a simple, calculated step. We love seeing how our Mocs and future explorers tackle these challenges, so share your results with us and keep reaching for the sky!

🚀 We are proud to partner with EPB to highlight the incredible power of the Gig City! Chattanooga is home to some of the fastest internet in the world, and we love showing our students how this technology fuels their future success.

📡 Fiber-optic data transmission works by sending information as tiny pulses of light through thin strands of glass. Think of it like using a super-fast flashlight to blink secret messages across the city in a nanosecond, allowing data to travel at the speed of light.

At the UTC Challenger Center, we put this speed to the test! During our simulated space missions, students manage high-speed communication arrays to stay in contact with deep space. Here is why this connection matters:

• Students learn to interpret complex data streams just like real NASA engineers.
• They practice rapid decision-making while managing mission-critical information.
• Our simulations bridge the gap between classroom theory and real-world high-tech careers.

We love being part of a community that values innovation and connectivity. Thank you, EPB, for powering the dreams of the next generation of scientists right here in our Scenic City!

Did you know that milk is actually hiding a secret, invisible force on its surface? Just like a rocket launch at the UTC Challenger Center, we are about to create something spectacular right in your kitchen! 🚀

Surface tension acts like a stretchy skin on top of the milk, holding everything in place. When you introduce dish soap, it acts like a disruptor that breaks those bonds, causing the fat molecules to scramble and create a colorful supernova explosion. It is a simple way to watch chemistry in action!

Try this at home to make a splash as big as the Tennessee Aquarium:

1. Pour enough milk into a shallow dish to cover the bottom.

2. Add a few drops of different food coloring in the center of the milk.

3. Dip a cotton swab into dish soap, then touch it gently to the center of your colors.

4. Watch as the colors race away and swirl like a nebula in deep space!

We love seeing our future explorers get hands-on with science. If you try this, snap a photo and show us your results! Our mission is to inspire the next generation of scientists here in the Scenic City, and we want to see what you create.



UTC Challenger Center: https://www.utc.edu/challenger

What an incredible week to celebrate a true icon of space exploration! On this day in history, Sally Ride became the first American woman to travel into space, forever changing the trajectory of NASA’s space shuttle missions. She shattered glass ceilings at 1,750 miles per hour, showing the world that the sky is not the limit. 🚀

Her legacy is a powerful reminder that bravery and brilliance are the keys to unlocking the universe. When Sally Ride looked down at the Earth from the shuttle, she saw a future full of possibilities for girls everywhere who dared to dream big. 👟

To all the aspiring young scientists and engineers here in the Scenic City, it is time to lace up your sneakers just like our very own UTC Mocs. Whether you are aiming for the stars or solving problems right here in Chattanooga, your potential is limitless. We are so inspired by the next generation of explorers who are ready to take on the mission. Want to book your own mission at our center and start your training? Visit our website today to learn more about our upcoming programs.



UTC Challenger Center: https://www.utc.edu/challenger