Two Super-Puff Planets Found in Nearby Star System

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The discovery of two super-puff planets, TOI-791 b and TOI-791 c, has shed new light on the characteristics of these enigmatic worlds. These gas giants are situated in an F7-type dwarf star system, where they orbit together with a unique orbital arrangement known as a 5:3 mean-motion resonance. This phenomenon allows us to understand how these planets formed from the same disc of gas and dust surrounding their young star.

The low densities of TOI-791 b and TOI-791 c are truly remarkable. TOI-791 b has a density of just 0.038 grams per cubic centimeter, while TOI-791 c measures 0.047 grams per cubic centimeter. For comparison, Jupiter's average density is approximately 1.33 grams per cubic centimeter, making it roughly 28 to 35 times denser than these planets. Earth, on the other hand, averages a much higher density of 5.5 grams per cubic centimeter.

The formation of TOI-791 b and TOI-791 c from the same disc of gas and dust surrounding their young star is believed to be responsible for their unique properties. This process allowed these planets to grow together, forming a pair that shares distinct characteristics. The unusual orbital arrangement between these two planets has sparked scientific interest, as it is one of only four other planetary systems known to contain multiple super-puff planets.

As we continue to explore the universe and uncover its secrets, we are reminded of our own place within the vast expanse of space. These discoveries not only expand our knowledge of celestial bodies but also serve as a testament to the awe-inspiring complexity of the cosmos. The study of TOI-791 b and TOI-791 c serves as a poignant reminder that science is a human endeavor, driven by curiosity and a desire to understand the mysteries of the universe.

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In the dimly lit expanse of space, two siblings orbit a small star, their presence a whispered secret among the cosmos. TOI-791 b and TOI-791 c, these "super-puff" planets are about the size of Jupiter, yet they float on air, with densities that would make cotton candy seem substantial by comparison. One is a mere 0.038 grams per cubic centimeter, while its sibling teeters at an astonishing 0.047 grams per cubic centimeter.

These enigmatic worlds share a birthright, forged in the same swirling vortex of gas and dust surrounding their young star. As they danced into existence, they became bound together by an intricate orbital arrangement, a 5:3 mean-motion resonance that whispers secrets to astronomers. Their formation is a reminder that even in the vastness of space, family ties can be strong.

What's remarkable about these two planets isn't just their unusual density – it's what this discovery reveals about the universe itself. Among the four known planetary systems with multiple super-puff planets, TOI-791 b and TOI-791 c stand out as a fascinating example of how our solar system is not alone in its diversity. This find invites us to ponder the many mysteries hidden beyond our cosmic horizon, and the intricate dance of celestial bodies that awaits discovery.

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Two planets orbiting a small star in the sky have been found to be incredibly light. They're about as big as Jupiter, but they don't weigh nearly as much. In fact, TOI-791 b and TOI-791 c are less dense than cotton candy - that's really, really lightweight for something so big.

These planets formed from the same cloud of gas and dust around their star when it was young, making them like siblings. They're connected by a special way they orbit each other, called a 5:3 mean-motion resonance. This discovery is helping us learn more about how planets form and what makes some worlds so different from others.