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ߞߐߕߐ߮:Planets in the Making.jpg

ߞߐߕߐ߮ ߓߊߛߎ߲ ‏(߂,߀߀߀ × ߂,߀߀߀ ߖߌ߬ߦߊ߬ߘߊ߲ߕߊ߸ ߞߐߕߐ߮ ߢߊ߲ߞߊ߲: ߂߄߀ KB߸ MIME ߛߎ߮ߦߊ:image/jpeg)

ߘߐ߬ߛߙߋ ߣߌ߲߬ ߦߋ߫ ߦߊ߲߬ ߠߋ߫ Wikimedia Commons ߖߊ߬ߕߋ߬ߘߐ߬ߛߌ߮ ߕߐ߭ ߟߎ߬ ߞߏ߬ߣߌ߲ ߘߌ߫ ߛߴߊ߬ ߟߊߓߊ߯ߙߊ߫ ߟߊ߫. ߊ߬ ߕߐ߯ ߛߓߍߟߌ ߦߙߐ ߞߐߕߐ߮ ߞߊ߲߬ߛߓߍߟߌ ߞߐߜߍ ߟߋ߬ ߦߋ߫ ߘߎ߰ߟߊ ߘߐ߫ ߣߌ߲߬.

ߟߊߘߛߏߣߍ߲

ߕߐ߯ߟߊߘߏ߲
English: Our Solar System formed out of a huge, primordial cloud of gas and dust. The vast majority of that cloud formed the Sun, while the leftover disc of rotating material around it eventually coalesced into the orbiting planets we know — and live on — today.

Astronomers can observe similar processes happening around other stars in the cosmos. This splendid Picture of the Week shows a disc of rotating, leftover material surrounding the young star HD 163296. Using the observing power of the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile, astronomers have been able to discern specific features in the disc, including concentric rings of material surrounding the central star. They were even able to use ALMA to obtain high-resolution measurements of the gas and dust constituents of the disc. With these data they could infer key details of the formation history of this young stellar system.

The three gaps between the rings are likely due to a depletion of dust and in the middle and outer gaps astronomers also found a lower level of gas. The depletion of both dust and gas suggests the presence of newly formed planets, each around the mass of Saturn, carving out these gaps on their brand new orbits.
ߕߎ߬ߡߊ߬ߘߊ
ߛߎ߲ https://www.eso.org/public/images/potw1652a/; see original posting at https://www.almaobservatory.org/en/images/star-hd-163296/ and https://public.nrao.edu/news/2016-alma-planets-disk/#PRimageSelected
ߛߓߍߦߟߊ ALMA (ESO/NAOJ/NRAO); A. Isella; B. Saxton (NRAO/AUI/NSF)

ߟߊ߬ߘߌ߬ߢߍ߬ߟߌ ߦߴߌ ߘߐ߫

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This file is licensed under the Creative Commons Attribution 4.0 International license.
ߘߍ߬ߡߍ߲߬ߘߌ߬ߟߌ: ALMA (ESO/NAOJ/NRAO); A. Isella; B. Saxton (NRAO/AUI/NSF)
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