There's a planet called Pheonix that's like a giant balloon.
It's close to its star, but it hasn't lost its air like other planets.
Scientists don't know why it's so puffy.
But they think it could help us understand how our own planet will change in the future.
Learn English with En30s
Our simplified news summaries make learning English easy and efficient. Whether you're a beginner or an advanced learner, we have the right level for you. Choose from our easy, normal, or hard summaries and improve your English skills today!