The material attracted to the growing star is crushed and orbited around the star. The closer the flat material is to the star, the faster the disc rotates. According to the researchers, this difference in speed is “conclusive evidence that it is a planet-forming disk.”
Light is emitted as the disc rotates. The speed difference across this light was measured by the ALMA high-resolution telescope.
It can be compared to an ambulance driving near the siren. The frequency – or tone – increases as the ambulance approaches. Once the car passes, the frequency drops again and the pitch becomes lower. This is called the Doppler effect, named after the Austrian scientist Christian Doppler.
Although the disk is identical to that in our Milky Way Galaxy, the material attracted to the star in the Large Magellanic Cloud is different. There is much less dust in that galaxy, which is about 160,000 light-years away. This gave astronomers an unobstructed view of the formation of stars and planets.
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