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It notes Pluto’s discovery in 1930 while stressing that the object kept secrets afterward. It explains how faint Pluto appears in the sky and highlights its characteristics compared with other solar-system bodies.",{"@graph":69,"@context":114},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":15,"@type":76,"position":81},"https://docshare.wps.com/document/literature/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/pluto-chapter-5-the-double-planet/426808/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/pluto-chapter-5-the-double-planet/426808.png","ImageObject",300,407,{"name":92,"@type":93},"Melati","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-09","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108],{"name":109,"@type":110,"acceptedAnswer":111},"When was Pluto discovered and what happened afterward?","Question",{"text":112,"@type":113},"Pluto was “discovered” in 1930, but the text states that it continued to keep its secrets and remained mysterious after discovery.","Answer","https://schema.org",{"og:url":83,"og:type":116,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":118,"canonical":83},"index,follow",{"doc_id":120,"site_id":62},426808,1790775705,{"code":4,"msg":5,"data":123},{"doc_id":120,"user_id":124,"nickname":92,"user_avatar":125,"doc_module":4,"category_id":14,"category_name":15,"doc_title":65,"doc_description":67,"doc_content":126,"file_id":127,"file_url":128,"file_type":129,"file_size":130,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":131,"language":132,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":133,"faqs":134,"seo_title":135,"seo_description":67,"update_tm":136,"read_time":62},962085570644,"https://ap-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d","所  \nLn bPLUT O0B/01  \niROBERT DAILY  \nBoston Public Library  \nROBERT DAILY  \nPLUTOA FIRST BOOKFRANKLIN WATISNEW YORK/CHICAGO/LONDON/TORONTO/SYDNEY  \nLM BR  \nJ  \nQB701.D351994  \nFor Janet,as always  \nCover photograph copyright Astronomical Society of the Pacific  \nPhotographs copyright :Don Dixon Spacescapes:pp.8,39,51;  \nNew York Public Library,Picture Collection:pp.11,14,33,36,43;  \nThe Lowell Observatory:pp.16,18,19;North Wind Picture  \nArchives,Alfred,Me.:p.21;The Hale Observatory:p.25;  \nAstronomical Society of the Pacific:pp.28,45,56;Finley Holiday  \nFilm:pp.30,50;NASA/JPL:pp.47,55.  \nLibrary of Congress Cataloging-in-Publication Data  \nDaily,Robert.  \nPluto/by Robert Daily.  \np.cm.—(First book)  \nIncludes bibliographical references and index.ISBN 0-531-20166-X(lib.bdg.)—ISBN 0-531-15770-9(pbk.)  \n1.Pluto(Planet)—Juvenile literature.1.Pluto(Planet)]I.Title.II.Series.QB701.D351994523.4'82—dc20a94-58 CIP AC  \nCopyright ◎1994 Robert DcilyAll rights reservedPrinted in the United States of America  \nCHAPTER 1The Last Planet7  \nCHAPTER 2The Hunt for Planet X10  \nCHAPTER 3Pluto's Vital Stats  \nCHAPTER 4A Frozen World  \n# CHAPTER 5The Double Planet\n\n41  \nCHAPTER 6  \n# Where Did Pluto Come From?48\n\nCHAPTER 7Cannonball to Pluto  \n53  \n# Fact Sheet on Pluto58\n\nGlossary  \n59  \nFor Further Reading61  \nIndex  \n62  \nUntil foirly recently,nobody even knew it wasthere!  \nWay,way out on the edge of the solar system,it floated in its weird and lonely orbit,a phan-tom ball of ice and rock—too far,too dark,andtoo small to be seen from Earth with the nakedeye(or even most telescopes).  \nEven after it was \"discovered\"in 1930,thismystery object has kept its secrets well.With itscrazy orbit around the sun—the strangest inthe solar system—it's hard to pin down.It′seven harder to spot in the sky.It is about 1,600times too faint to be seen with the eye;throughthe largest,most powerful telescopes on Earthit shows upas only a tiny pinprick of light.  \n1.may not look like it in this drawinbut Pluto(seen here with its moCharon)is the oddball of our sosystem—the coldest,smalleand darkest plan","cbCailIRaRwfeuvz","https://ap.wps.com/l/cbCailIRaRwfeuvz","pdf",2570149,68,"English","# Chapter 5 The Double Planet\n## Where Did Pluto Come From?\n## Fact Sheet on Pluto\n## Glossary\n## For Further Reading\n## Index","[{\"question\":\"When was Pluto discovered and what happened afterward?\",\"answer\":\"Pluto was “discovered” in 1930, but the text states that it continued to keep its secrets and remained mysterious after discovery.\"}]","Pluto - Chapter 5 - The Double Planet | PDF",1790641875]