Uploaded February 2026 | Updated September 2026, 2 weeks ago

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There are *at least* 2 trillion galaxies out there in the Universe - if you were to count them all yourself, how long would that actually take you?! #astronomy #astrophysics #galaxies #science #shorts

👩🏽‍💻 I'm Dr. Becky Smethurst, an astrophysicist at the University of Oxford (Christ Church). 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.


drbecky.uk.com