John Stott

In this galaxy cluster merger the galaxies are located in the red shaded regions with the majority of the mass. The pink region in the middle is where the gas lies. This proves the existence of a missing dark matter 😉🧪🔭 #extragalactic #cosmology

Our JELS paper on galaxy sizes (stellar and Halpha) and merger rates at z=6 using NB JWST data has now been accepted for publication. Congratulations @hmostevo.bsky.social 🧪🔭 #extragalactic #academicsky

Not read the paper yet but this looks v cool

My reasoning is if aliens came down tomorrow and asked us how we’d been getting on with discovery it would be embarrassing if we didn’t know much.

In memoriam...

😳

Galaxy cluster with lots of blue galaxies, lensing mostly brown background galaxies into arcs around the cluster.

#Galaxy cluster ACO S 1121 (SPTJ2325-41) with #JWST NIRCam.

Filters: F277W, F356W, F444W

program: www.stsci.edu/jwst-program...

Avoid plagiarism by performing your own research and reading around the background literature, such that you can write your own original sentences. #academicsky

bugs bunny is sitting at a table with a purse and stacks of money Alt: bugs bunny is sitting at a table with a purse and stacks of money

It's that time of year when my alma mater asks me for money when they have far more money than my own institution (factor of 300 in value of the respective endowments). They also used to ask me for it when I worked for them which seemed a little cheeky. #academicsky

Two edge-on galaxies with a ring around their center.

Two gravitational lens candidates from the North ecliptic pole EXtragalactic Unified Survey (NEXUS).

#JWST 🔭 NIRCam image (filters: F200W, F444W)

program: www.stsci.edu/jwst-program...

Yeh my students who use LLMs for the short essay style questions in coursework always do badly as I want them to talk around the specific points Ive taught them. Not what gpt thinks.

A photo of the band Big Bang

Trying boy band cosmology/astro puns and it's not really happening...
New Kids on the Bok (globule)
Make(make) That
Boy(habitable)zone

(although according to google there's already boy band called Big Bang)
🧪🔭

Inner child extremely excited about a crewed mission to the moon as soon as February!
Outer adult painfully aware of the NASA funding cuts and their impact on wide-ranging and incredibly important scientific research.
Anyone else simultaneously thrilled and downcast about this news?🔭🛰️

yep

MS Teams telling me it no longer works unless I upgrade my OS... don't threaten me with a good time 🧪 #academicsky

The main diagram shows the Earth's annual rotation around the Sun, surrounded by a zodiacal scale that gives the names, symbols and images of the signs of the zodiac. The seasons and the positions of the equinoxes and solstices are marked. Text at the corners describes the Zodiac and the Earth, and a longer text at the bottom explains the Phenomena of the Seasons. From https://collections.rmg.co.uk/media/501/182/l1073_001.jpg

⏰ Start your countdown clock for the exact moment of the autumn #equinox, 19:19 (UK) 22nd Sept, when the Northern hemisphere and Southern hemisphere are equally illuminated. Today the day length in 🏴󠁧󠁢󠁳󠁣󠁴󠁿Scotland is ~the same as in 🇳🇿New Zealand 🤓🧪🔭

📷: National Maritime Museum, Greenwich

10 years since I decided it looked like a crocodile 😀🔭🧪

Trent Reznor takes a seat from Labour!

She clearly doesn’t understand how the oil and gas market works… or is advocating for nationalising an oil company which seems highly unlikely 😂

Yes, looking at old documentaries, it's pure content for the whole episode... none of this: here's what I'm going to tell you, here's what I've just told you, such that an hour documentary is only 20mins of new material.

H. M. O. Stephenson, et al.: The \emph{JWST} Emission Line Survey (JELS): The sizes and merger fraction of star-forming galaxies during the Epoch of Reionization https://arxiv.org/abs/2509.08045 https://arxiv.org/pdf/2509.08045 https://arxiv.org/html/2509.08045

There will be on Nov 1st

I know you lot love this, but why am I seeing halloween cakes in mid september? 🙄

so true!

🧪🔭 #extragalactic

New JWST paper from Lancaster’s @hmostevo.bsky.social 🧪🔭 #extragalactic

New JWST paper from Lancaster’s @hmostevo.bsky.social 🧪🔭 #extragalactic

Feel a bit sorry for Corpus being brought into this #academicsky

Life on Mars just came on my Spotify so it must be true!

🧪🔭