Dr. Hannah Osborne

I (a white woman in her 30s) am standing in a large warehouse smiling. Behind me is a large storage rack filled with white boxes, each box is roughly the size of me and the racks stretch to the ceiling and into the distance.

How many segments make a mirror?

Each white box contains a hexagonal segment which will make up the primary mirror for the @eso.org ELT. A total of 798 segments are required and each is *almost* as tall as me, this warehouse has the first ~200 that have been made. #astronomy

An xkcd cartoon titled “Typical exoplanet system”. There’s a drawing of a star and several weird planets orbiting around it. The planets are labeled as follows: Giant planet orbiting so close that it’s actually rolling on the star’s surface. Hot Jupiter. Mini Neptune. Planet that could be habitable, if there’s a form of life that hates water but loves acid and being on fire. Cold Jupiter. Potentially habitable void. Hot Mars. Planet that may actually be in the habitable zone, according to a very optimistic modelling paper by some desperate postdocs. There’s a pulsar here but it’s probably fine. A water world paradise with beautiful oceans and warm- wait, no, we just got new measurements, it’s a hellish steam oven. Mini Pluto. Lukewarm Jupiter. Earthlike data artifact. Planet whose atmosphere is confirmed to contain atoms. Wet Saturn. Either a gas giant or a fist-sized rock, depending which calibration method you use. Faint dust cloud that will cause several papers to be retracted. Somehow this whole system is smaller than the orbit of Mercury?! Planet whose surface may host conditions suitable for rocks. Mouseover text: Sure, this exoplanet we discovered may seem hostile to life, but our calculations suggest it’s actually in the accretion disc’s habitable zone.

New exoplanet classification just dropped 🔭🧪

xkcd.com/3103/

A white woman stands in front of an old English Manor House. She is smiling and holding two large, gold, helium balloons which spell out ‘DR’. The balloons are each roughly half of her height.

So happy to announce that I am finally Dr Hannah, exoplanets PhD 🪐

hi bluesky, amidst the neverending US politics news, here is a timeline cleanse in the form of a pig getting suncream

Some personal news I am very happy and excited to share:

www.eso.org/sci/publicat...

Post a warning

Donate to Support Marcy Harbut's Family After Fire Loss, organized by Khai Harbut My name is Khai Harbut. I am starting this GoFundMe because my sister Marcy … Khai Harbut needs your support for Support Marcy Harbut's Family After Fire Loss

Folks, if you still have energy and want to direct it somewhere, my incredible officemate, @marcyharbut.bsky.social, lost her house in the #LAFires. Her brother set up a gofundme to help them start over. She's THE BEST - so please help if you can.

www.gofundme.com/f/support-ma...

Donate to Supporting Jenn & Sam after the Eaton Fire, organized by Jenn Burt Hi friends, As many of you already know, the wildfires that tore through Alta… Jenn Burt needs your support for Supporting Jenn & Sam after the Eaton Fire

Hey folks - like many people, our friends have lost their house and everything in it. If you are able to help support them through a long, slow recovery, please do. #LAFires

gofund.me/a24b7e39

A poster with an image of a telescope dome under a starry sky. The text of the poster says: 7th ESO Summer Research Programme 30 June - 8 August 2025 ESO Headquarters, Garching bei München, Germany Application deadline: 30 January 2025 Fully funded programme for undergraduate and master (pre-PhD) students in astronomy, physics or related subjects. Research a cutting-edge astronomy project. Collaborated with top researchers. Discover ESO and its telescopes. Learn new skills and astrophysics. Find out more & apply online: http://eso.org/summerresearch

🔈 Calling pre-PhD university students in astronomy & astrophysics!

Apply by 30 January 2025 for the next edition of ESO’s Summer Research Programme, taking place at ESO Headquarters in Garching, to obtain research experience by working with our astronomers.

More info ➡️ www.eso.org/sci/meetings...

This is fantastic 😂 (and completely accurate)

Picture of the top of the Giza Puramid showing the individual large bricks that form the pyramid. A white dog has climbed to the top and has been photographed by a passing paraglider. An inset showing a zoomed image of the dog is displayed. Text:”dog spotted barking at birds on top of great pyramid of Giza”

EVERYBODY STOP.

I just learned that a good boy or good girl climbed all the way to the top of the Great Pyramid of Giza to shout at some birds.

Anubis guards the tomb of the pharaohs from Horus. The mythological tales were real.

HT WeRateDogs Insta account (who are awesome and we need them here)

Congrats, it’s twins! Iconic brown dwarf is actually two iconic brown dwarfs Gliese 229B is actually two of these weird objects in a tight orbit around each other

Man, I love me some brown dwarfs. They are just the coolest (haha! ha!) objects. And this is one I actually studied and had *no clue* it was actually twins!

badastronomy.beehiiv.com/p/congrats-i...

🧪 🔭

And to anyone who happens to be sitting on the #JWST TAC this year, please be kind to the applicants, and don’t give them a list of 20 things to add next cycle… the ideas and nuances were all in there originally, but they were left on the cutting room floor.

The absolute unit sheep; an Exmoor Horn ram

look at this absolute unit

JWST image of the planet Eps Ind Ab. Faint blue starlight is scattered in the center, and the planet appears as a bright red blob in the left of this image.

What’s the coolest exoplanet you’ve ever seen?

2024 General Election survey - Vote for Policies Not sure who to vote for? Compare promises without seeing which party they belong to. Vote with confidence in the 2024 General Election.

It's a big day on Thursday when the UK goes to the polls. I know who I'll be voting for, but if you're undecided, may I suggest taking this quiz to help you see whose policies you most align with? voteforpolicies.org.uk

I heard sometime in February

Hey, I’m on that paper! 🔭 🪐 we have an article about it on the Extrasolar Times extrasolartimes.substack.com/p/the-delica...

1) finally have this discovery paper accepted 🔭

2) make some nice plots of my results so far of my ESO project 🪐

3) finish crocheting a blanket for my soon-to-arrive nephew 🧶

Yes! Highly recommend the Exocast podcast www.exocast.org