div class=ts-pagebuttonPage 1button div class=ts-image a href=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5page1jpg target=_blank amp-img class=ts-thumb alt=Page 1: crabpdfshapes most of the 1500 known plane- tary nebulae in our galaxy look un- assumingly starlike In fact planetary nebulae are usually identified as such by their emission-line src=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 2button div class=ts-image a href=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5page2jpg target=_blank amp-img class=ts-thumb alt=Page 2: crabpdfshapes most of the 1500 known plane- tary nebulae in our galaxy look un- assumingly starlike In fact planetary nebulae are usually identified as such by their emission-line src=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5thumbnails2jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 3button div class=ts-image a href=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5page3jpg target=_blank amp-img class=ts-thumb alt=Page 3: crabpdfshapes most of the 1500 known plane- tary nebulae in our galaxy look un- assumingly starlike In fact planetary nebulae are usually identified as such by their emission-line src=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5thumbnails3jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 4button div class=ts-image a href=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5page4jpg target=_blank amp-img class=ts-thumb alt=Page 4: crabpdfshapes most of the 1500 known plane- tary nebulae in our galaxy look un- assumingly starlike In fact planetary nebulae are usually identified as such by their emission-line src=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5thumbnails4jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 5button div class=ts-image a href=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5page5jpg target=_blank amp-img class=ts-thumb alt=Page 5: crabpdfshapes most of the 1500 known plane- tary nebulae in our galaxy look un- assumingly starlike In fact planetary nebulae are usually identified as such by their emission-line src=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5thumbnails5jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 6button div class=ts-image a href=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5page6jpg target=_blank amp-img class=ts-thumb alt=Page 6: crabpdfshapes most of the 1500 known plane- tary nebulae in our galaxy look un- assumingly starlike In fact planetary nebulae are usually identified as such by their emission-line src=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5thumbnails6jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 7button div class=ts-image a href=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5page7jpg target=_blank amp-img class=ts-thumb alt=Page 7: crabpdfshapes most of the 1500 known plane- tary nebulae in our galaxy look un- assumingly starlike In fact planetary nebulae are usually identified as such by their emission-line src=https:reader042vdocumentssitereader042viewer20220411005ed84e2c6664347bbe091bbchtml5thumbnails7jpg width=142 height=106 layout=responsive amp-imga divdiv