Astronomers Study Newly Discovered Fast-forming Exoplanet — VOA Learning English
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Astronomers have observed a newborn planet that formed in three million years, a relatively brief time. They say the discovery leads to questions about the current understanding of the speed of planetary formation.
Space scientists estimate the planet to be around 10 to 20 times the mass of Earth. It is an exoplanet, meaning a planet outside our solar system. It is one of the youngest exoplanets ever discovered. It exists among dense gas and dust orbiting a young star. The orbiting matter is called a protoplanetary disk. It provides the materials necessary for planet formation.
The star it orbits is not as hot and is about half as bright as our sun. The star's mass is about 70 percent that of…
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