2021 February 07 - Blue Straggler Stars in Globular Cluster M53
Channel: APOD Podcast
Date: 2021-02-07

In today's image, we see a globular star cluster known as M53. In this cluster, we see a large number of blue straggler stars - stars that are too massive to exist based on the age of the cluster. The fact that the do exist helps us better understand the transfer of matter between stars and helps us to better gauge the age of the universe. 

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I also provide lecture videos to accompany the free OpenStax Astronomy textbook (https://openstax.org/details/books/astronomy/) on another channel. They are avilable here: https://www.youtube.com/playlist?list=PLZQxoLgRWwSogy2XRgaUjM5t6srdSle-d or through this channel: https://studio.youtube.com/channel/UCvryQCnfR2qEWueq-UaWKDw

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