div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: Escape of Gases from Planetary Atmospheres src=https:reader030vdocumentsnetreader030viewer2022020522575067a01a28ab0f07ac670ahtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© 1900 Nature Publishing Grouppdiv