Matt Bothwell
@mattbothwell.com
1.8K followers 970 following 200 posts
Astrophysicist, science communicator, author, human person 🪐 Public Astronomer at the University of Cambridge 🏛️ Bye-fellow at Girton College, Cambridge 📚 Author of The Invisible Universe, Astrophysics for Supervillains, & more www.mattbothwell.com
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mattbothwell.com
I'm delighted that my first children's book, Astrophysics for Supervillains, is featured in BookTrust’s Great Books Guide 2025, chosen as one of their top recommended children’s books of the year 😀🔭

www.booktrust.org.uk/book-recomme...
mattbothwell.com
Oh to be a cat in a drawer
A black and white cat, lying in a drawer full of linens and blankets
mattbothwell.com
Back at the Royal Institution, as part of the book tour 😀
mattbothwell.com
On the contrary, Cornell et al. (1994) was way ahead of its time, positing the existence of quasi-stars (en.m.wikipedia.org/wiki/Quasi-s...) which mainstream astrophysics didn’t predict until 2006.
vaguebiscuit.bsky.social
If I learned anything from the song Black Hole Sun it's that Chris Cornell didn't know shit about astrophysics
Reposted by Matt Bothwell
astrowright.bsky.social
She basically invented astrophysics.
She proved the laws of chemistry, quantum mechanics, and statistical mechanics, not just gravity, applied universally.
She determined the composition of the sun and primacy of hydrogen in the universe.
She advised the PhDs of Frank Drake and Frank Kameny.
elisecutts.bsky.social
Cecilia Payne-Gaposchkin ✨ figured out what stars are made of ✨ when she was just 25. 🔭🧪

Her PhD thesis basically established the Harvard astro department — at a time when Harvard didn't officially allow woman students.

I wrote this little profile to mark the 100th anniversary of her thesis:
mattbothwell.com
Google AI doesn’t understand how borders work
mattbothwell.com
I’ll be back at the Ri on October 4th, talking about all things dark matter-y. Come along!
rigb.org
Dark Matter appears to have shaped the cosmos from its earliest moments. Yet despite its profound influence, Dark Matter has never been directly detected.

Join astronomer @mattbothwell.com as he explores the evidence leading scientists to this astonishing conclusion.
Searching for the invisible universe
Explore the mysteries of Dark Matter with Matt Bothwell
www.rigb.org
mattbothwell.com
Exciting news! I'm going to be giving TWO talks at the Royal Institution on 4th October: an afternoon talk for children about my latest book (The Great Alien Hunt), and an evening talk for adults about the mysteries of Dark Matter. 🔭🧪👽

www.rigb.org/whats-on/gre...

www.rigb.org/whats-on/sea...
The great alien hunt (family)
Join astronomer Matt Bothwell for a journey for life across the Universe
www.rigb.org
mattbothwell.com
Major discovery
eddedmondson.bsky.social
I note that 'alien observations' is an anagram of 'Avi Loeb's insane rot'
mattbothwell.com
Amazing stuff, bravo.
mattbothwell.com
GPT5 now knows how many 'r's are in the word strawberry. But this seems like a one-off, and fails on similar words.

Has the 'how many 'r's in strawberry' question become easy just because it's now part of the training data?
mattbothwell.com
The colour-coordinated flowers are on point at Peterhouse College!
Reposted by Matt Bothwell
astroroyalscot.bsky.social
Big day for the matriarchy! 🥳 Huge congrats to the awesome Prof. Doughtery, lead on the Jupiter-bound ESA JUICE mission & STFC Exec Chair.

If anyone's confused on the astro royal hierarchy: Michele and I are the astro equivalents of 🇬🇧Westminster and 🏴󠁧󠁢󠁳󠁣󠁴󠁿Holyrood 🤗

ℹ️: www.bbc.co.uk/news/article... 👩‍🔬🔭🧪
UK gets first female Astronomer Royal in 350 years
Prof Michele Dougherty is the first woman to be appointed to the influential post.
www.bbc.co.uk
mattbothwell.com
It must have been an irresistible trade-off for a narcissist. You can have millions of lay-people hanging on every word you say and buying your books, and all you have to do is torch your career among a few thousand professionals
Reposted by Matt Bothwell
coreyspowell.bsky.social
It's official: A new interstellar object is currently flying through our solar system at 61 km/sec.

Comet 3I/ATLAS, as it's now known, is only the 3rd known interstellar visitor, but the new Rubin Observatory is likely to find dozens more in the coming years. 🔭🧪

science.nasa.gov/solar-system...
This diagram shows the trajectory of interstellar comet 3I/ATLAS as it passes through the solar system. It will make its closest approach to the Sun in October. Credit: NASA/JPL-Caltech
Reposted by Matt Bothwell
philplait.bsky.social
OK, looks like 3I/ATLAS is a comet! If it were an asteroid the image would be symmetric circles. The distortion is likely due to ices sublimating to form a gaseous tail.
rerutled.bsky.social
ATel #17264: Deep g'-band Imaging of Interstellar Comet 3I/ATLAS from the Two-meter Twin Telescope (TTT) www.astronomerstelegram.org?read=17264

-- by Miguel R. Alarcon et al.
An astrophysical image of the isophotes around a near point source, showing an extendedness, indicated to be approximately in the anti-solar direction.
mattbothwell.com
Aaaaaand… done! The first draft of Astrophysics for Supervillains 3 has been officially sent to my editor 😀

(Due May 2026. Ish.)
Reposted by Matt Bothwell
jjaron.bsky.social
A visitor from another star has been spotted speeding through the solar system! This is only the third ever interstellar object we've seen so far - I'm excited to learn more about it in the coming months before it flies away again www.newscientist.com/article/2486...
Interstellar visitor spotted hurtling through the solar system
An object thought to have come from another star has been seen entering the solar system at high speed, and is expected to whip around the sun in the coming months
www.newscientist.com
mattbothwell.com
Another interstellar visitor? Looks like it could be…

Also, I can’t wait for Rubin to find hundreds of these things. Exciting times!
Reposted by Matt Bothwell
coreyspowell.bsky.social
The details are not yet finalized, but the budget bill would devastate NASA science and the future of US exploration in space and astronomy. Among many other things. 🔭🧪

www.planetary.org/articles/nas...
NASA science budget over time Planned NASA mission cancelations