NASA’s Transiting Exoplanet Survey Satellite, known as TESS, has made an exciting discovery! It found a young exoplanet, which is a planet outside our solar system, about the same size as Earth. This exoplanet is located 73 light-years away from us. That’s pretty far, but in space terms, it’s relatively close!
This new exoplanet orbits its star very quickly, completing a full orbit in just 4.2 days. To give you an idea, Mercury, the closest planet to our Sun, takes 88 days to orbit. This means the exoplanet is much closer to its star than Mercury is to the Sun. Because of this close distance, one side of the planet always faces the star, making it extremely hot, with temperatures soaring to 1,260 degrees Celsius. Imagine a world that might look like a giant ball of lava!
What’s really interesting about this exoplanet is its age. It’s one of the youngest planets we’ve ever found, being only 10% as old as Earth. Despite its young age, it’s almost the same size as our planet. Scientists are excited because studying young planets helps us understand how planets form and evolve over time.
TESS discovered this exoplanet using a method called the transit method. This involves watching for tiny dips in the brightness of a star, which happen when a planet passes in front of it. This method has helped TESS find over 4,000 exoplanets so far!
This exoplanet is part of a larger system with other unique planets. Scientists are eager to learn more about it, especially because of the stark differences between its day and night sides. The day side is scorching hot, while the night side might be much cooler. Studying these differences can teach us a lot about how planets behave in extreme conditions.
Using clay or other craft materials, create a model of the exoplanet described in the article. Pay attention to the features such as its size, proximity to its star, and the contrasting day and night sides. This will help you visualize the unique characteristics of this lava world.
Conduct a simple experiment to understand how the transit method works. Use a flashlight to represent a star and a small ball to represent the exoplanet. Move the ball in front of the flashlight and observe how the light dims. This activity will help you grasp how TESS detects exoplanets.
Choose another exoplanet system discovered by TESS and research its characteristics. Prepare a short presentation to share with your classmates, highlighting what makes your chosen system unique and how it compares to the lava world exoplanet.
Create a chart comparing the orbit and temperature of the exoplanet with planets in our solar system. Use this chart to discuss why the exoplanet has such extreme temperatures and a fast orbit. This will deepen your understanding of planetary science.
Imagine you are the newly discovered exoplanet. Write a short story describing a day in your life, focusing on the extreme conditions and your relationship with the nearby star. This creative exercise will help you empathize with the conditions on other planets.
NASA’s Transiting Exoplanet Survey Satellite (TESS) has discovered an Earth-sized young exoplanet located 73 light-years away. This world orbits its sun-like star in just 4.2 days, at a distance closer than Mercury is to our Sun. Its tidally locked nature means one side always faces the star, reaching extreme temperatures of 1,260 degrees Celsius, possibly resembling a lava world. This exoplanet is notable for being one of the youngest discovered, at only 10% of Earth’s age and nearly Earth’s size. TESS identified it using the transit method, adding to its 4,000-plus exoplanet discoveries. This exoplanet is part of a system with other unique planets, making it a key target for further study, especially regarding its contrasting day and night sides.
Exoplanet – A planet that orbits a star outside our solar system. – Scientists have discovered an exoplanet that might have conditions suitable for life.
NASA – The National Aeronautics and Space Administration, responsible for the United States’ civilian space program and for aeronautics and aerospace research. – NASA launched a new telescope to study distant galaxies.
Star – A massive, luminous sphere of plasma held together by gravity, often visible in the night sky. – The Sun is the closest star to Earth and provides us with light and heat.
Orbit – The curved path of an object, such as a planet or moon, around a star, planet, or moon. – The Earth takes about 365 days to complete its orbit around the Sun.
Temperature – A measure of how hot or cold something is, often related to the energy of particles in a substance. – The temperature on the surface of Venus is extremely high due to its thick atmosphere.
Young – In astronomy, often refers to stars or celestial bodies that have recently formed and are in the early stages of their development. – Young stars are often found in regions of space where new stars are being born.
System – A group of interacting or interrelated entities that form a unified whole, such as a solar system with a star and its orbiting planets. – Our solar system consists of the Sun and the planets that orbit it, including Earth.
Scientists – People who study or have expert knowledge of one or more of the natural or physical sciences. – Scientists use telescopes to observe distant galaxies and learn more about the universe.
Method – A systematic way of doing something, often involving a series of steps or procedures. – One method scientists use to find exoplanets is by observing the dimming of a star’s brightness when a planet passes in front of it.
Brightness – The amount of light emitted or reflected by an object, such as a star or planet. – The brightness of a star can help astronomers determine its size and distance from Earth.