ALL THE DETAILS on Earendel: a star 12.9 billion light years away seen by the Hubble Space Telescope

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Welch, Coe et al. (2022; free to read) - https://stsci-opo.org/STScI-01FX61F3NBSQQY4K41GKAX05QD.pdf
Archive of approved Hubble Space Telescope proposals: https://www.stsci.edu/ftp/presto/ops/program-lists/HST-TAC.html
Archive of approved JWST programs: https://www.stsci.edu/jwst/science-execution/approved-programs/cycle-1-go
RELICS HST public observing planning file:
https://www.stsci.edu/hst/phase2-public/14096.pdf
Earendel HST monitoring public observing planning file: https://www.stsci.edu/hst/phase2-public/16668.pdf
Earendel JWST public observing planning file: https://www.stsci.edu/jwst/phase2-public/2282.pdf

00:00 - Introduction
00:30 - Gravitational lensing explained
02:09- An unexpected arc discovery in the RELICS survey
02:24 - How do we know it's 12.9 billion light years away?
04:02 - Repeat observations reveal clumps along the arc
04:53 - How we can see a SINGLE STAR at that distance
06:20 - The name Earendel and the Tolkein connection
07:11 - How do we know it's a single star?!
08:10 - What else could it be? Star cluster, binary star, Milky Way foreground star
09:23 - What's next: getting a spectrum with JWST
10:34 - The excitement around Population III stars
11:38 - Outro
12:06 - Brilliant
13:16 - Bloopers

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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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