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The red supergiant Betelgeuse
图像
图注： The image shows Betelgeuse, a red supergiant in the constellation Orion, observed by the Atacama Large Millimeter/submillimeter Array (ALMA). ALMA consists of many antennae spread across a plain in Northern Chile. The observations from all of these receivers is synthesised together by a central computer to form an image. The wide distances between the antennae mean that is can resolve very fine details.
Most stars we observe are just seen as points of light, but Betelgeuse is so large (with a radius about 1,400 times larger than the Sun) and is sufficiently nearby that it is one of the few stars to have been resolved to show it as an extended object.
Betelgeuse is a massive star, more than 14 times the mass of the Sun and is relatively young for a star (less than 14 million years old). However, its high mass led to it having a very hot core which burned through its hydrogen fuel quickly. It has since evolved through many stages and now appears as a red supergiant, it's final stage before exploding as a supernova. When such an explosion will happen is not known for certain, but it could be in around 100,000 years. Such an explosion would be visible from Earth, even during the day.
来源： ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella
来源链接
词汇表:
巨星 , 红巨星 , 红超巨星 , 超巨星 , M 型星
分类：
恒星
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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4.86 MB)
Star Hats astroEDU 教育活动（链接至 astroEDU 网站） 描述: Make your star hat, learning about the stars
词汇表:
恒星
分类：
恒星
标签：
Art
, Creativity
, Hands-on
年龄段：
4-6
受教育等级:
学前
学习领域：
美术为主
, 互动讲座
费用:
低成本
时间跨度:
30 分钟
组别大小：
个人
技能：
提出问题
, 传达信息
作者： Tibisay Sankatsing Nava
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
