UTC Challenger STEM Learning Center

Imagine a world where the air is so heavy it could crush a submarine. On Venus, the atmospheric pressure is ninety times higher than what we feel in Chattanooga. It is like carrying the weight of a skyscraper on your shoulders every single day. 🚀

Our own atmosphere is much kinder, but it still follows strict rules. When air molecules cool down rapidly, they pack together more tightly, creating a localized drop in pressure. Nature hates a vacuum, so it pulls surrounding air or objects inward to fill the void. 🔭

To see this in action, grab an adult and try this experiment. Boil a hard-boiled egg and peel it. Light a small strip of paper, drop it into a glass bottle with an opening slightly smaller than the egg, and immediately place the egg on top. As the flame dies, the cooling air inside creates a low-pressure zone, and the egg will be sucked right into the bottle.

We explore these extreme environments during our simulated missions here at the UTC Challenger Center. Share this with your Chattanooga crew to see who can explain the science behind the egg suction experiment first.



Source Name: https://www.utc.edu/challenger

Nineteen years ago today, astronomers launched a literal fireworks show across the cosmos as the Deep Impact mission successfully collided with Comet Tempel 1. While families gather across the Tennessee Valley for Independence Day celebrations, we are looking back at this mission that sought independence from mystery by peering deep into the heart of a space traveler. 🔭

Comets are the pristine, frozen archives of our solar system. By smashing a probe into the comet, researchers revealed that these objects are more like porous, icy rubble piles than solid rocks. This helps scientists map out how our neighborhood in space first formed. 🚀

To see this science in action, try making a dirty snowball at home:

1. Mix water with a handful of charcoal dust and sand in a bowl to represent the ice and organic material found in a comet.

2. Pour the mixture into a balloon and freeze it overnight.

3. Carefully peel back the balloon and use a spoon to chip into the surface to observe the internal layers, much like the probe did in 2005.

We love seeing our local community get creative with science. Share this post with your Chattanooga crew to spread some space knowledge today!



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

The Tennessee Aquarium Conservation Institute is on the front lines of protecting our local waterways, using science to map the hidden lives beneath the surface of the Tennessee River. Their researchers use a tool called environmental DNA, or eDNA, to detect microscopic traces of life left behind by fish and other creatures in the water. 🧬

Think of it like a detective finding a fingerprint left on a glass. Even if you cannot see the fish, the DNA they shed tells scientists exactly who is swimming nearby. This method makes biodiversity tracking much faster and helps keep the river healthy.

🔭 At the UTC Challenger Center, we connect this exact same science to the cosmos. When our students learn to test water samples here in Chattanooga, they are practicing the essential skills needed for future space missions. Imagine an astrobiologist searching for microbial life in the icy, hidden oceans of Europa or the liquid methane lakes on Titan. The techniques perfected by our partners at TNACI are the same ones we might one day use to find life among the stars.

Next time you walk along the Riverwalk, remember that the water splashing against the shore is full of biological clues waiting to be discovered. If you know a teacher, parent, or student who would love this connection to real world science, please share this with them.