神十航天员进行中国首次太空授课
<p>王亚平太空授课，演示水膜变水球</p><p><span word="China">China</span>'<span word="s">s</span> <span word="second">second</span> <span word="female">female</span> <span word="astronaut">astronaut</span>, <span word="Wang">Wang</span> <span word="Yaping">Yaping</span>, <span word="has">has</span> <span word="delivered">delivered</span> <span word="the">the</span> <span word="country">country</span>'<span word="s">s</span> <span word="first">first</span>-<span word="ever">ever</span> <span word="video">video</span> <span word="lecture">lecture</span> <span word="from">from</span> <span word="space">space</span>.</p><p><span word="Speaking">Speaking</span> <span word="to">to</span> <span word="students">students</span> <span word="via">via</span> <span word="live">live</span> <span word="video">video</span>, <span word="Ms">Ms</span> <span word="Wang">Wang</span> <span word="used">used</span> <span word="spinning">spinning</span> <span word="tops">tops</span>, <span word="a">a</span> <span word="ball">ball</span>, <span word="water">water</span> <span word="and">and</span> <span word="a">a</span> <span word="fellow">fellow</span> <span word="astronaut">astronaut</span> <span word="to">to</span> <span word="explain">explain</span> <span word="physics">physics</span> <span word="in">in</span> <span word="zero">zero</span>-<span word="gravity">gravity</span>.</p><p><span word="She">She</span> <span word="was">was</span> <span word="speaking">speaking</span> <span word="from">from</span> <span word="the">the</span> <span word="Tiangong">Tiangong</span>-1 <span word="space">space</span> <span word="laboratory">laboratory</span>, <span word="where">where</span> <span word="the">the</span> <span word="Shenzhou">Shenzhou</span> <span word="spacecraft">spacecraft</span> <span word="is">is</span> <span word="currently">currently</span> <span word="docked">docked</span>,</p><p><span word="China">China</span>'<span word="s">s</span> <span word="fifth">fifth</span> <span word="manned">manned</span> <span word="space">space</span> <span word="mission">mission</span>, <span word="Shenzhou">Shenzhou</span>-10, <span word="is">is</span> <span word="scheduled">scheduled</span> <span word="to">to</span> <span word="end">end</span> <span word="around">around</span> 25 <span word="or">or</span> 26 <span word="June">June</span>. <span word="The">The</span> <span word="crew">crew</span> <span word="is">is</span> <span word="also">also</span> <span word="expected">expected</span> <span word="to">to</span> <span word="attempt">attempt</span> <span word="a">a</span> <span word="manual">manual</span> <span word="docking">docking</span> <span word="later">later</span> <span word="on">on</span> <span word="Thursday">Thursday</span>.</p><p><span word="This">This</span> <span word="will">will</span> <span word="involve">involve</span> <span word="getting">getting</span> <span word="back">back</span> <span word="inside">inside</span> <span word="their">their</span> <span word="Shenzhou">Shenzhou</span> <span word="capsule">capsule</span>, <span word="unhooking">unhooking</span> <span word="from">from</span> <span word="Tiangong">Tiangong</span> <span word="and">and</span> <span word="then">then</span> <span word="flying">flying</span> <span word="around">around</span> <span word="the">the</span> <span word="lab">lab</span> <span word="to">to</span> <span word="re">re</span>-<span word="attach">attach</span> <span word="the">the</span> <span word="capsule">capsule</span> <span word="to">to</span> <span word="the">the</span> <span word="laboratory">laboratory</span>.</p><p><span word="Ms">Ms</span> <span word="Yang">Yang</span> <span word="used">used</span> <span word="difference">difference</span> <span word="experiments">experiments</span> <span word="to">to</span> <span word="demonstrate">demonstrate</span> <span word="the">the</span> <span word="concepts">concepts</span> <span word="of">of</span> <span word="weight">weight</span> <span word="and">and</span> <span word="mass">mass</span> <span word="in">in</span> <span word="space">space</span>.</p><p><span word="After">After</span> <span word="showing">showing</span> <span word="how">how</span> <span word="normal">normal</span> <span word="scales">scales</span> <span word="did">did</span> <span word="not">not</span> <span word="work">work</span> <span word="in">in</span> <span word="space">space</span>, <span word="she">she</span> <span word="used">used</span> <span word="a">a</span> <span word="special">special</span> <span word="scale">scale</span> <span word="to">to</span> <span word="measure">measure</span> <span word="the">the</span> <span word="mass">mass</span> <span word="of">of</span> <span word="crew">crew</span> <span word="commander">commander</span> <span word="Nie">Nie</span> <span word="Haisheng">Haisheng</span>, <span word="using">using</span> <span word="Newton">Newton</span>'<span word="s">s</span> <span word="second">second</span> <span word="law">law</span> <span word="of">of</span> <span word="motion">motion</span> - <span word="measuring">measuring</span> <span word="the">the</span> <span word="mass">mass</span> <span word="of">of</span> <span word="an">an</span> <span word="object">object</span> <span word="through">through</span> <span word="force">force</span> <span word="and">and</span> <span word="acceleration">acceleration</span>.</p><p><span word="At">At</span> <span word="another">another</span> <span word="point">point</span>, <span word="to">to</span> <span word="show">show</span> <span word="how">how</span> <span word="objects">objects</span> <span word="move">move</span> <span word="in">in</span> <span word="the">the</span> <span word="microgravity">microgravity</span> <span word="environment">environment</span> <span word="of">of</span> <span word="space">space</span>, <span word="she">she</span> <span word="asked">asked</span> <span word="her">her</span> <span word="colleague">colleague</span> <span word="to">to</span> <span word="help">help</span> <span word="her">her</span> <span word="rotate">rotate</span> 90 <span word="degrees">degrees</span>, <span word="and">and</span> <span word="then">then</span> 180 <span word="degrees">degrees</span>, <span word="from">from</span> <span word="the">the</span> <span word="floor">floor</span> <span word="of">of</span> <span word="the">the</span> <span word="laboratory">laboratory</span>.</p><p><span word="Spinning">Spinning</span> <span word="tops">tops</span> <span word="were">were</span> <span word="used">used</span> <span word="to">to</span> <span word="create">create</span> <span word="gyroscopic">gyroscopic</span> <span word="motion">motion</span> <span word="in">in</span> <span word="space">space</span>, <span word="and">and</span> <span word="a">a</span> <span word="ball">ball</span> <span word="attached">attached</span> <span word="to">to</span> <span word="a">a</span> <span word="string">string</span> <span word="to">to</span> <span word="demonstrate">demonstrate</span> <span word="pendulum">pendulum</span> <span word="motion">motion</span>.</p>
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