Conference season has started! Excited to be finishing off my time at the Flatiron Institute by sharing my research at the New York Area Exoplanets Meeting!

Did you know that stars have fingerprints? To help you search for them (aka to view how different types of stars have characteristically different spectra in the Gaia RVS region) I created this visualization below, best viewed on desktop! zoehackshaw.github.io/kiel_explore... Happy exploring! 🧪🔭

Before installing the detector it's essential to take some time out and see the gorgeous spectrum with your own eyes. It's impossible to capture what the eye sees but this photo gives you an idea ...

Successful Echelle installation 🎉 The heart of HARPS3 is looking amazing 😍

I was part of this program a few years ago and I can’t recommend it enough!

The future of UK Astronomy & Particle Physics is at risk from proposed 30% funding cuts that, if implemented, will be "genuinely catastrophic". Great to see this detailed BBC report on the issue by @pallabg.bsky.social 🔭🧪⚛️ #STFCcuts #SaveUKAstronomy 🗞️: www.bbc.co.uk/news/article...

This week we are hosting the @terrahunting.bsky.social science team in Oxford. Terra Hunting will use HARPS3 which is right now being installed on the Isaac Newton Telescope in La Palma to search for nearby Earth analogues. Exciting times! @oxfordphysics.bsky.social @oxoplanets.bsky.social

My dad is moving which means going through all my books stored at his- my Astro book collections is slightly insane it turns out. But more importantly, I found the book that started the space obsession for me! 🔭⭐️🪐

Big congrats to Jennifer Burt, Xavier Dumusque, and Sam Halverson on finishing their epic (instant classic) Annual Reviews of Astronomy & Astrophysics article "Precise Radial Velocities"! arxiv.org/abs/2511.01954 contains some great new graphics for talks on #exoplanets #EPRV #DopplerSpectroscopy

HARPS3 has definitely arrived at the INT (and I was only slightly excited to see it!) @terrahunting.bsky.social

I’ve made it to La Palma where I’ll be spending the next week observing with the TNG! Here are some mandatory photos of the observatory 🔭🌟💫

It’s happening!! Can’t believe I arrived in La Palma the same day!

Great talk by @niamhk12.bsky.social on her talk at the Oxford Astrophysics Early Career Showcase! Teaching us all about supergranulation and the need to understand it in order to detect Earth twins!

The official number of exoplanets has surpassed 6,000! And you can access data on all 6,007 of them right here at IPAC 📈 🪐 Watch the video & read all about the center of the exoplanet universe (also known as NExScI!) here: www.ipac.caltech.edu/news/the-nas...

So excited for this!!!

Very excited to share that my new paper has been accepted for publication in MNRAS! We are applying Doppler Imaging to model the activity signals from the HARPS-N Sun-as-a-star spectra! We show that injected planets can be retrieved with great accuracy! ui.adsabs.harvard.edu/abs/2025MNRA... 🔭🪐🧪

Sometimes the world is just beautiful

Congrats to DPhil student Niamh on her incredible talk! Her work on supergranulation is helping to improve our ability to detect Earth like planets around sunlike stars! You can read more of her work here: arxiv.org/abs/2506.23693

Had a great time at #eprv6 this week! We had a splinter session on supergranulation that led to some great discussions! Thank you to everyone who came!

Measuring the Suns radial velocity variability due to supergranulation over a magnetic cycle. Niamh K. O'Sullivan et. al. https://arxiv.org/abs/2506.23693

It’s paper day 🎉!! If you are interested in seeing how supergranulation changes over a solar cycle in RVs give it a read! arxiv.org/abs/2506.23693

Excited to be at #eprv6 this week! If you are here and want to talk about supergranulation come find me!

Had a great time learning all about PLATO and the PLATO-ESP conference in Marseille this week!

Introducing...your sneak peek at the cosmos captured by NSF–DOE Vera C. Rubin Observatory! Can you guess these regions of sky? This is just a small peek...join us at 11am US EDT for your full First Look at how Rubin will #CaptureTheCosmos! 🔭🧪 #RubinFirstLook ls.st/rubin-first-look-livestream

Don't sleep on Gaussian processes. Most under-rated model class on this or any other planet (we've used Gaussian processes to study exo-planets!)

Spent the evening at @wolfsonoxford.bsky.social learning about astronomy in ancient Mesopotamia! It was fascinating!

We had a great talk by @moudhy.bsky.social at @wolfsonoxford.bsky.social AstroClub this evening! Thank you so much to everyone who came along and especially to Moudhy for such a great talk!

... and the picture of the grism in its holder just before installation - how beautiful is this?!

Come join us if you are interested in astronomy, history, or both! Should be a great event!

Happy May Morning from Oxford 🌸 🌺🌻

Quite the venue for #Discuss2025!

Reading more about this, I'm disappointed in the authors of this study & how they've turned a very marginal result into worldwide press releases. In this climate, we as scientists have a responsibility to lead by example and represent our work accurately to the press. This is not that. ☄️🔭🧪

Hello World!

Congratulations to Niamh O’Sullivan (@niamhk12.bsky.social) on her pop up talk advertising her poster, which describes her research on understanding stellar supergranulation in order to find Earth twins 🔭 #ukexom25

Partial solar eclipse in the UK! Sharing my love of the Sun with my friends! ☀️🔭⭐️

Goodbye, Gaia.

Excited for Planets Day here in Oxford. Being hosted in Jesus College!

Very excited to have given a talk at #knowthystar2 yesterday on my work on characterising supergranulation in the Sun! If you’re around and want to discuss SG come find me I’d love to talk!

Sun Avoidance xkcd.com/3029

Still relevant...

Congratulations to Prof. Raymond Pierrehumbert (@climatebook.bsky.social) on being awarded the Cassini Medal from European Geosciences Union www.egu.eu/news/1170/eg...

Hi BlueSky! We have joined to bring updates and news from the Exoplanet and Planetary Physics groups here at Oxford! 🔭

The rotation periods of the planets, side-by-side

Today’s research helper is Humbug, who is keeping my notebook warm for me while I’m in meetings 🔭🐈‍⬛!!

Hey! Are you an #astronomy grad looking to grow your network? Astro undergrad interested in seeing what grad school is like? Astro professor looking for some gossip? General fan of astronomy interested in learning more? Drop a follow! go.bsky.app/G1JVEGr

The clouds blessed us in Dallas ☀️ 🔭🪐Seeing a total eclipse as an astrophysicist was truly incredible (no tears were shed at all…) #totalsolareclipse

Did you know that there are 100 known eclipses occurring simultaneously at *every moment this year*? Astronomers have discovered so many exoplanets orbiting distant stars that about 100 of them are eclipsing their stars when viewed from Earth at any point in time this year. 🔭🪐🧪

Weather app says there aren’t any clouds, I disagree 🌥️. It might peak through though 🤞 #solareclipse 🔭☀️

COME ON SUN. DO IT FOR ALL THE ASTRONOMERS IN TEXAS RIGHT NOW.

Eclipse Coolness xkcd.com/2914