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billion years a large cloud of dust and gas became unstable and started loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader039vdocumentsusreader039viewer20220403105f30169fb09977203371ec6dhtml5thumbnails3jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imagea href=https:reader039vdocumentsusreader039viewer20220403105f30169fb09977203371ec6dhtml5page4jpg target=_blank img data-url=ee-lesson-11-2-formation-of-solar-system-solar-system-and-earth-topicshtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: 鐘聲學校 · LESSON 11 2 Formation Of Solar System Solar System And Earth TOPICS About years ago 46 billion years a large cloud of dust and gas became unstable and started loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC 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src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader039vdocumentsusreader039viewer20220403105f30169fb09977203371ec6dhtml5thumbnails26jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=27Page 27button div class=ts-imagea href=https:reader039vdocumentsusreader039viewer20220403105f30169fb09977203371ec6dhtml5page27jpg target=_blank img data-url=ee-lesson-11-2-formation-of-solar-system-solar-system-and-earth-topicshtmlpage=27 data-page=27 class=ts-thumb lazyload alt=Page 27: 鐘聲學校 · LESSON 11 2 Formation Of Solar System Solar System And Earth TOPICS About years ago 46 billion years a large cloud of dust and gas became unstable and started loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader039vdocumentsusreader039viewer20220403105f30169fb09977203371ec6dhtml5thumbnails27jpg 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ago 46 billion years a large cloud of dust and gas became unstable and started loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader039vdocumentsusreader039viewer20220403105f30169fb09977203371ec6dhtml5thumbnails30jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=31Page 31button div class=ts-imagea href=https:reader039vdocumentsusreader039viewer20220403105f30169fb09977203371ec6dhtml5page31jpg target=_blank img data-url=ee-lesson-11-2-formation-of-solar-system-solar-system-and-earth-topicshtmlpage=31 data-page=31 class=ts-thumb lazyload alt=Page 31: 鐘聲學校 · LESSON 11 2 Formation Of Solar System Solar System And Earth TOPICS About years ago 46 billion years a large cloud of dust and gas became unstable and started loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC 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