The Year in Space and Physics

A look back at the biggest stories of 2023

Alastair Williams
6 min readJan 6, 2024

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The Horsehead Nebula, imaged by ESA’s new Euclid telecope. Image credit: ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre (CEA Paris-Saclay), G. Anselmi, CC BY-SA 3.0 IGO

Every week I send my email subscribers a newsletter discussing advances in space and physics. I am sharing this look back at the year’s newsletters with all of you on Medium. If you’d like to subscribe, you can do so for free by clicking here.

As has become tradition by now, at the end of each year I like to look back at the stories covered by The Quantum Cat. This year has offered no shortage of interesting topics. Researchers have explored everything from the details of the Earth’s core to the echoes of the largest explosion ever recorded by humanity. Below, however, I’ve picked some of the largest trends, and, perhaps, some that will prove to be the most consequential developments of the year.

Before that, however, I’d like to take a moment to thank all of you for subscribing and for reading The Quantum Cat. I’ve enjoyed writing every edition, and I hope you’ve enjoyed reading them. I can’t thank you enough for your continued support.

Exploring the Ancient Universe

A year ago the work of the James Webb Space Telescope had barely started. After its launch, on Christmas Day 2021, operators took six months to unfurl its mirrors, calibrate its instruments and prepare it to peer deep into the cosmos. Its…

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Alastair Williams

Exploring the relationship between humanity and science | Physicist | Space Mission Engineer | Subscribe at www.thequantumcat.space/ |