Editing Planetary system (section)

====Lower-mass stars====
[[File:Protoplanetary discs observed with SPHERE.jpg|thumb|Protoplanetary discs observed with the [[Very Large Telescope]].<ref>{{cite web|title=Sculpting Solar Systems - ESO's SPHERE instrument reveals protoplanetary discs being shaped by newborn planets|url=https://www.eso.org/public/news/eso1640/|website=www.eso.org|access-date=December 7, 2016}}</ref>]]
As stars evolve and turn into [[red giant]]s, [[asymptotic giant branch]] stars, and [[planetary nebula]]e they engulf the inner planets, evaporating or partially evaporating them depending on how massive they are.<ref name="NYT-20230503">{{cite news |last=Ferreira |first=Becky |title=It's the End of a World as We Know It - Astronomers spotted a dying star swallowing a large planet, a discovery that fills in a "missing link" in understanding the fates of Earth and many other planets. |url=https://www.nytimes.com/2023/05/03/science/star-eating-planet.html |date=3 May 2023 |work=[[The New York Times]] |url-status=live |archiveurl=https://archive.today/20230503155540/https://www.nytimes.com/2023/05/03/science/star-eating-planet.html |archivedate=3 May 2023 |accessdate=3 May 2023 }}</ref><ref name="NYT-20220819">{{cite news |last=Ferreira |first=Becky |title=The Juicy Secrets of Stars That Eat Their Planets - As scientists study thousands of planets around the galaxy, they are learning more about worlds that get swallowed up by their stars. |url=https://www.nytimes.com/2022/08/19/science/stars-planets-engulfment.html |date=19 August 2022 |work=[[The New York Times]] |accessdate=19 August 2022 }}</ref> As the star loses mass, planets that are not engulfed move further out from the star.

If an evolved star is in a binary or multiple system, then the mass it loses can transfer to another star, forming new protoplanetary disks and second- and third-generation planets which may differ in composition from the original planets, which may also be affected by the mass transfer.
<!--External links in an article like this are inappropriate. If they can be used as references, then please add them as as inline citations to whatever claim they support. Otherwise, please remove them and this hidden comment-->
<!--*[https://arxiv.org/abs/1012.0572 Planets in evolved binary systems], Hagai B. Perets, January 13, 2011
*[https://arxiv.org/abs/astro-ph/0702724 Can Planets survive Stellar Evolution?], Eva Villaver, Mario Livio, Feb 2007
*[https://arxiv.org/abs/0910.2396 The Orbital Evolution of Gas Giant Planets around Giant Stars], Eva Villaver, Mario Livio, October 13, 2009
*[https://arxiv.org/abs/1210.0879 On the survival of brown dwarfs and planets engulfed by their giant host star], Jean-Claude Passy, Mordecai-Mark Mac Low, Orsola De Marco, October 2, 2012
*[https://arxiv.org/abs/1210.0328 Foretellings of Ragnarök: World-engulfing Asymptotic Giants and the Inheritance of White Dwarfs], Alexander James Mustill, Eva Villaver, December 5, 2012
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