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木星、木卫一及其阴影,作者:Ralf Burkart,德国
视频
为 OAE 制作
图注: 2021 年国际天文学联合会 OAE 天体摄影比赛伽利略卫星类第一名。
这幅木星的延时摄影是于2017 年从德国拍摄的,作品精美地展示了伽利略卫星之一木卫一在木星前的凌星现象。由于这只是卫星在行星上投下影子,因此相当于从更远的地方观测地球上的月食。虽然卫星的影子从一开始就清晰可见,但在木星美丽的大气带背景下,第一次观看视频时可能很难发现卫星本身。反复观看可以欣赏到这一奇妙的快速运动和旋转过程。
来源: Ralf Burkart/IAU OAE
词汇表:
伽利略卫星 , 气态巨行星 , 木卫一,音译为艾奥 , 木星 , 卫星 , 轨道 , 外行星 , 行星 , 凌
分类:
太阳系
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 ( 视频 12.64 MB)
木卫影片2,Nicolas Hurez,Paul-Antoine Matrangolo,和Carl Pennypacker,美国
视频
为 OAE 制作
图注: 2021 年国际天文学联合会 OAE 天体摄影比赛伽利略卫星类第二名。
这组照片展示了四颗伽利略卫星围绕木星运行的轨道。从中几乎可以看到最内侧的卫星木卫一艾奥的两个完整轨道,其他卫星(木卫二欧罗巴和木卫三加尼美得,尤其是木卫四卡利斯托)距离较远,运行速度明显较慢。这些图像是在2018年由Las Cumbres全球天文台在地球上不同地点拍摄的,因此可以在大约半个星期内连续拍摄一系列图像,白天也没有间隙。在天空晴朗的条件下,连续几个夜晚,也可以用双筒望远镜观测到伽利略卫星的运动(最好将手肘稳稳地放在地面上)。
来源: Nicolas Hurez,Paul-Antoine Matrangolo 和 Carl Pennypacker/IAU OAE
词汇表:
伽利略卫星 , 气态巨行星 , 木卫一,音译为艾奥 , 木星 , 卫星 , 轨道 , 外行星 , 行星
分类:
太阳系
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 ( 视频 890.47 kB)
Halley's Comet
图像
图注: Halley’s Comet, is a well-known periodic comet, named after the English astronomer Edmond Halley. It has an orbital period of approximately 75 years and is visible from Earth with the naked eye when it passes through the inner solar system.
The image shows Halley’s Comet, officially designated 1P/Halley, with a tail of gas and dust streaming away from the Sun. It was taken from the La-Silla-Observatory in Chile in 1986 during Halley's Comet's last visit to the inner solar system. The stars in this image appear elongated or as lines of three different colored dots as image was created from three separate observations in different colors of light and the telescope was tracking the comet, which was moving very slightly compared to the background stars. Note that the comets tail does not point in exactly the same direction as the elongation of the stars. This shows us that the comet tail is not always behind the comet, but instead pointing away from the Sun.
The comet passes its perihelion (closest distance to the Sun) at a distance of around 0.59 astronomical units, right between the orbits of Mercury and Venus. Beyond Neptune, it reaches its aphelion (furthest distance from the Sun) at a distance of approximately 35 astronomical units. Halley's Comet reached aphelion in December 2023 and is now moving inwards again. It is expected to be seen with the naked eye from Earth again in mid-2061.
来源: ESO
来源链接
词汇表:
远日点 , 彗星 , 彗尾 , 哈雷彗星 , 近日点
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
文件
( 图像
5.23 MB)
H-alpha image of the Sun's chromosphere
图像
图注: This false-color image was captured with a 10-cm telescope at the Big Bear Solar Observatory (BBSO) in the United States in July 2002. It depicts the full disk of the Sun using the H-alpha emission line of hydrogen. When observed in this spectral line, the Sun's chromosphere appears particularly prominent due to hydrogen atoms emitting light at the specific wavelength. This emission produces a distinctive red color, making features such as spicules (jets of plasma that look hair-like) and plage (bright patches in the chromosphere) highly visible. Several small solar prominences can be seen protruding from the edge of the solar disk. When prominences (also known as filaments) cross the face of the disk they appear as dark threads caused by the cooler material in the prominence absorbing light. The chromosphere is also visible in the violet part of the solar spectrum due to ionized calcium showing emissions in these wavelengths.
来源: Big Bear Solar Observatory (BBSO)/New Jersey Institut of Technology (NJIT)
来源链接
词汇表:
色球 , 日珥 , 太阳 , 光谱线
分类:
太阳
授权许可: 公共领域 公共领域 图标
文件
( 图像
2.82 MB)
One Million Earths inside our Sun astroEDU 教育活动(链接至 astroEDU 网站) 描述: Learn how to build a model of the Sun...which can fit nearly 1 million little Earth balls!
词汇表:
地球 , 太阳
分类:
数学
, 太阳系
, 太阳
标签:
Dimension
, Distances
, Hands-on
, Model
, Relative sizes
, Scales
年龄段:
4-6
, 6-8
, 8-10
, 10-12
, 12-14
, 14-16
, 16-19
, 19+
受教育等级:
非正式
, 初中
, 其他
, 学前
, Primary
, 中学
, 大学
学习领域:
引导式发现学习
, 建模
, 问题解决
费用:
中等成本
时间跨度:
30 分钟
组别大小:
小组
技能:
分析和解读数据
, 提出问题
, 传达信息
, 开发和使用模型
, 使用数学和计算思维
作者: Natalie Fischer
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
