How Fast Can a Planet Form? The Youngest Planet Ever Discovered

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Elias 2-24b is already several times Jupiter’s mass, yet its star system is estimated to be less than a million years old. This episode follows the discovery and asks how a gas giant can grow so massive, so quickly. We cover how astronomers use infrared and radio observations to study young planets, how they estimate ages, and why growing from tiny grains into a giant planet is a bit more complicated than it sounds. We also look at how an early forming giant planet can influence the fut...