“Translating” my latest astrophysics research paper | Why galaxy colour does not equal galaxy shape

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My latest research paper, Smethurst et al. (2021) –
Library of all my first author research papers (plus my PhD thesis!) – make sure to click on the “arXiv PDF” links to read for free –

Classify the shapes of galaxies on Galaxy Zoo:
Follow Galaxy Zoo team updates on Twitter:

Find my colleague Prof. Karen Masters on Twitter:

00:00 – Introduction
01:43 – What does the shape of a galaxy tell us?
02:31 – Why do people use colour as a proxy for shape?
03:27 – The Galaxy Zoo project
05:04 – What does the colour of a galaxy tell us?
06:40 – How do you measure the colour of a galaxy?
08:29 – Red spirals and blue ellipticals
09:13 – So how bad is it if you use colour as a proxy?
12:02 – The implications
13:56 – Learn something new with Brilliant
15:00 – Bloopers

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📚 “Space: 10 Things You Should Know”:

📚 US & Canada version: “Space at the speed of light” (same book, different title, with some beautiful illustrations):

📚 German translation “Das kleine Buch vom großen Knall” :

🎧 Royal Astronomical Society Podcast that I co-host:

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👩🏽‍💻 I’m Dr. Becky Smethurst, an astrophysicist at the University of Oxford. I love making videos about science with an unnatural level of enthusiasm. I like to focus on how we know things, not just what we know. And especially, the things we still don’t know. If you’ve ever wondered about something in space and couldn’t find an answer online – you can ask me! My day job is to do research into how supermassive black holes can affect the galaxies that they live in. In particular, I look at whether the energy output from the disk of material orbiting around a growing supermassive black hole can stop a galaxy from forming stars.



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