Artwork of a protoplanetary disc

Artwork of a protoplanetary disc

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Credit: MARK GARLICK/SCIENCE PHOTO LIBRARY

Caption: Astronomers have observed a protoplanetary disc around a star called Sz91, at a distance of 650 light-years from Earth. These are the first observations of such a disc around a star less massive than our Sun. The observations, made with the Atacama Large Millimeter/submillimeter Array (ALMA), show a narrow dusty ring with a radius of around 110 astronomical units - more than three times that of Neptune's orbit. The orange areas represent the dust, while the blue shows gas. Planets forming at the centre have carved out a hole in the dust, creating a ring, which the team observed at radio energies.

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Keywords: accretion, alma, arecibo, artwork, astronomy, cgi, digitally-generated image, disc, disk, dust, formation, gas, observations, protoplanet, protoplanetary disc, radio, ring, space, star, sz91, young stellar object

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