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在精致的宇宙模拟环境中,体验一场流星雨。3D visualization of NASA meteor shower data. Scientifically accurate and fully interactive.
针对电脑、手机、路由器等设备或零件的解决方法,有问题直接找它就可以了。
是一个有趣的物理视频和科学材料科普的视频网站。A YouTube Channel hosted by Dianna Cowern that adventures into the physical sciences with experiments, demonstrations, and cool new discoveries.
公益性质的网站,展示了此时此刻全球各地的光污染的状况。Interactive world light pollution map. The map uses NOAA/EOG VIIRS, World Atlas 2015, observatories, clouds and SQM/SQC overlay contributed by users.
最好的飞行跟踪站点:实时跟踪地图、飞行状态、航空公司航班延误、私人/通用航空飞行及机场信息。
HS编码查询网(www.hsbianma.com)是提供进出口商品HS编码查询,商品编码查询的网站。
这个网站集合了世界各地护照样式,还有办理程序,办理难易程度等等。Passport Index curates, sorts and ranks the world's passports. Explore passport designs, browse by visa-free score, color, or country and discover how they rank.