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Moon map from the NASA Clementine mission
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图注： A map of the Moon's surface constructed of images taken by the BMDO/NASA Clementine mission. The center of the image corresponds roughly to the center of the full moon. This map is a projection of the spherical moon onto a flat surface so the regions around the poles appear distorted, just as Antarctica appears distorted on a map of the Earth.
The large, dark patches in the center of the image are maria (singular mare). These are named after the Latin word for sea but they are not oceans like we have on Earth. Instead they are vast plains of basalt formed by lava that flowed out of volcanos on the moon billions of years ago. They appear darker and smoother than the older, lighter lunar highlands.
来源： USGS Astrogeology Science Center;
来源链接
词汇表:
月球 , 月海
分类：
太阳系
授权许可： 公共领域 公共领域 图标
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302.21 kB)
正发生月食的月亮从多洛米蒂山脉（联合国教科文组织世界遗产区）普伦德拉岩峰（Rochetta di Prendera ）附近落下，作者 Alessandra Masi，意大利
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为 OAE 制作
图注： 2021 年国际天文学联合会 OAE 天体摄影比赛月全食类第一名。
月食发生于满月进入地球阴影时。这种现象发生在太阳、地球和月球的排布完全或非常接近一条直线时。月球表面反射的红光是太阳光照射月球途中，穿过地球大气层时发生折射造成的。较蓝的光由于瑞利散射作用消失，因此月球表面呈现红色。地球阴影在月球表面显示出的圆形形状，曾被亚里士多德用作地球是球体的证据之一。这张照片拍摄于2019 年 1 月 21 日，展示了被地球阴影笼罩的月球（月食）在意大利多洛米蒂山脉（联合国教科文组织世界遗产区）普伦德拉岩峰（Rochetta di Prendera ） 附近落下的景象。
来源： Alessandra Masi/IAU OAE
词汇表:
月食 , 月球 , 月全食
分类：
肉眼天文学
授权许可： 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标
此文件在 Zenodo 上 ( 图像 4.19 MB)
The Speed of Spacecraft
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图注： This infographic is part of the "Simplifying Astronomy for Arabic Speakers" project, aiming to present scientific concepts in a simple and accessible way. The design focuses on the speed of spacecraft during the various stages of their launch, illustrating how velocity changes as the spacecraft progresses to reach the desired orbit.
Details of the Stages:
Stage One (Launch):
The spacecraft begins its journey by launching from the launch pad with an increasing speed. The velocity in this stage is influenced by Earth's gravity and atmospheric resistance.
After One Minute:
The spacecraft reaches a speed of approximately 1,600 kilometers per hour (km/h), reflecting a rapid acceleration powered by its engines.
After Two and a Half Minutes:
The rocket boosters are jettisoned, allowing the spacecraft to reach a speed of about 4,800 km/h. At this point, the spacecraft becomes lighter, enabling it to accelerate more efficiently.
Final Stage:
By the end of the ascent phase, the spacecraft achieves its final speed of approximately 28,000 km/h, allowing it to enter the desired orbit around Earth.
Through educational designs like this, the project provides enthusiasts with an opportunity to understand the intricate details of space missions in an engaging and simplified manner.
来源： Ali Al-Edhari ; Background image credit - NASA
词汇表:
火箭
语言： Arabic
文字系统： Arabic
授权许可： 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标
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11.88 MB)
Global Temperature Trends: Past 50 Years
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图注： This map visualizes the changes in surface air temperature across the globe over the past half-century. Through meticulous analysis of annual averages, the map highlights the most significant trends in temperature change, particularly emphasizing shifts in northern latitudes and over land masses.
来源： NASA’s Scientific Visualization Studio, Key and Title by Eric Fisk
来源链接
词汇表:
全球气候变暖
分类：
地球
授权许可： 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标
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108.48 kB)
