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The red supergiant Betelgeuse
image
Caption: 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.
Credit: ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella
Credit Link
詞彙表術語:
巨星 , 紅巨星 , 紅超巨星 , 超巨星 , M 型星
Categories:
Stars
License: Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
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Star Hats astroEDU educational activity (links to astroEDU website) Description: Make your star hat, learning about the stars
詞彙表術語:
恆星
Categories:
Stars
Tags:
Art
, Creativity
, Hands-on
Age Ranges:
4-6
Education Level:
Pre-school
Areas of Learning:
Fine Art focussed
, Interactive Lecture
Costs:
Low Cost
Duration:
30 mins
Group Size:
Individual
Skills:
Asking questions
, Communicating information
Authors: Tibisay Sankatsing Nava
License: Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
