Statistically, our current four-transit spectrum of TRAPPIST-1e can also be fit by a flat line (i.e. a featureless spectrum). So we can't rule out a bare rock with these data. There's also the important caveat that an incomplete stellar contamination correction could also imprint spectral features.

In Göttingen tonight? Check out the public talk by @esa.int astronaut @astromatthias.esa.int at 19:00. The talk will be held in German at the central campus of @uni-goettingen.de quantum25.dpg-tagungen.de/nachrichten/...

Terence Tao (@teorth.bsky.social) has written a thread on Mastodon about the impact of the federal grant freeze to UCLA, particularly to his own field of Mathematics. UCLA's IPAM (Institute of Pure and Applied Mathematics) could shut down entirely mathstodon.xyz/@tao/1149568...

Here is my colleague Adam Riess, Nobel laureate, sharing his thoughts on advocating for science at a recent event at the US Capitol. aas.org/posts/news/2...

We are saddened to report the passing of Cyril Hazard (18 March 1928 – 14 June 2025). Cyril was a pioneering radio astronomer whose work on quasars helped transform our understanding of the Universe. www.ast.cam.ac.uk/news/cyril-h...

Congratulations to Professor Naomi McClure-Griffiths and Li Yusen from ANU who are among six astronomers to receive awards at the Annual Scientific Meeting of the Australian Astronomy Society in 2025. Read more: science.anu.edu.au/news-events/...

As always, a very nice talk from Francois Lanusse: Generative Al for Inverse Problems and Forecasting Slides: eiffl.github.io/talks/Paris2...

Learn more about the reconciliation bill being voted on by the House today, and how this is different from the appropriations process that determines funding for our federal science agencies:

Huh? #FPGA plus #lasers?! A fancy #job indeed! www.linkedin.com/posts/drchri...

Anybody got a picture of Annie Walker? Possibly first British professional astronomer, later moved to Oz. www.theguardian.com/science/2025...

This includes working with all these excellent partners: - Intl. Science School - @spaceaustralia.com - @sydney.edu.au - @ozgrav.bsky.social - ARC CoE Dark Matter - Swinburne Uni. - Wheeler Centre - @queersinscience.bsky.social Keep an eye out for event pages and ticket links! 2/3 🔭

Ziteng (Andy) Wang @zitengwang.bsky.social tells the story behind the discovery of this unusual long period transient, in his article for @aunz.theconversation.com. theconversation.com/x-rays-have-... #RadioAstronomy #AstroSci

Totalling around 120 hours of observing time, this is the longest the NASA/ESA/CSA James Webb Space Telescope has ever focused on a single target. The deep field aims to probe the Cosmic Dawn, when the Universe was only a few million years old. Read more 👉 www.esa.int/ESA_Multimed... 🔭 🧪 ☄️

I am super excited to be hosting the incredible Katie Mack @astrokatie.com presenting "The End of Everything" at the University of Sydney @sydney.edu.au Join us on July 10 to learn about five ways the Universe might die! Registration is free... www.sydney.edu.au/engage/event... ⚛️ #Astronomy ⚛️

One of the largest coronal holes observed by SDO is now facing Earth! #heliophysics

#Radioastronomy #job alert. We’re looking to hire a Lead Scientist for Parkes Observatory. Murriyang, our 64m radio telescope, aka The Dish is currently getting an exciting upgrade with commissioning of the CryoPAF instrument. Check out this job at CSIRO: jobs.csiro.au/job/Parkes%2...

Was treibt Europas #Raumfahrt voran? Professor Thomas Zurbuchen spricht über seine Vision für ETH Zürich Space, die Stärken Europas, Herausforderungen im Vergleich zu den USA – und warum Mut, Teamgeist und Innovation entscheidend für die Zukunft im All sind. Jetzt lesen:

First images from the Square Kilometre Array Low Frequency (SKA-Low)! Taken with only 1,024 of the planned 131,072 antennas, and it's already looking good :) #RadioAstronomy

The disappearance of Gaia! On 4 March, astronomer Zhuo-Xiao Wang captured this view of the sudden disappearance of ESA’s Gaia spacecraft. Credit: Zhuo-Xiao Wang, CC BY-SA 3.0 IGO Observations performed on 4 March 2025 using an 11-inch telescope from Beijing, China (MPC site code: P13).

So cool! #technosignature #radioastronomy

In a short RNAAS note now on arxiv, arxiv.org/abs/2503.07972 I discuss in more detail the suggestion of Loeb and Cloete that 'dark comet' 2005 VL1 is actually the old Venera-2 space probe. (It's not.)

👀👀👀 Two exciting preprints today from Aussie institutions and scientists! 🔭☄️ 1. A 41-sec radio pulsar! Slowest pulsar we know about is ~23-secs and then there are these mysterious long-period transients that have rotations periods of mins to hours. This one fits between them!

PUNCH is orbiting and all four spacecraft are Sun-pointed. I can sleep now. ☀️🛰️🔭🚀

Submitted your PhD in the last three years (but before 2025)? There is an *awesome* prize fellowship for you at Macquarie in Sydney: the Lighthouse Fellowship. If you're into exoplanets, stars, and/or stats, get in touch with me or any of the other faculty and we can talk about it!

Tired of wondering which atomic lines are in your spectra? You need: *whose line is it anyway?* An interactive tool for identifying atomic spectral lines. 🧪🔭 #stars install: pip install whoseline source: github.com/bmorris3/who...

We are looking for an Observatory Manager to lead the team at Parkes Observatory. Yes, come work at Murriyang, otherwise known as The Dish. #radioastronomy jobs.csiro.au/job/Parkes%2...

Reading back through #RadioAstronomy transients history. The first variable phenomenon detected in radio waves was a flare from our own Sun. This snippet from Nature describes the result (discovered in 1942, but published in 1946 due to military restrictions). www.nature.com/articles/157...

Sharing this proposed Sydney Harbour Area Stars and Planets Meeting link, organised by my supervisor, Dr Ben Montet doodle.com/group-poll/p... Details in the images, link for getting a consensus on dates. I’ll likely present so please come!

Hot off the press! One of my students, Yu Wing (Joshua) Lee, has discovered a new radio transient (along with @manishacaleb.bsky.social). Read more about "The Stellar Object That’s Too Slow to Shine" in their Conversation article: theconversation.com/blinking-rad... #RadioAstronomy

After a world-first Earth-Moon double gravity assist in August 2024, our @esa.int #ESAJuice mission passed its hottest point enroute to Jupiter. On 1 January 2025 🎉, #ESAJuice was just 0.64 AU from the Sun. A flawless deep space manoeuvre was executed at midnight to adjust our trajectory to Venus!

Go help the solar observatory do the hardest possible puzzle of the sun in the exhibit hall!! #AAS245 🔭✨

Deep Space Station 34 received a clear beacon tone from the #ParkerSolarProbe after its close encounter with the Sun on 24th December.📡🛰️☀️ Congratulations to the mission science team & engineers @jhuapl and @NASA on this historic achievement. #DSS34 blogs.nasa.gov/parkersolarpro…

Congratulations to my colleagues James Mason, Dan Seaton, Cristina Kay, Amal Chandran, and Aaron Magner on a phenomenal video on the phenomenal #CubeSat mission #SunCET! Very nice bit of science outreach at #AGU2024! ☀️🧪🛰️🔭🎢

I wrote this new symbolic differentiation engine called DynamicDiff.jl: github.com/MilesCranmer... It's really really fast at differentiating runtime-generated expressions – no compilation needed!

Awesome huge Phytoplankton Bloom covering 1700km2 in the Ocean!! #Copernicus #Sentinel3 Image detected on Dec. 3rd shows the gorgeous swirls off the Southern Australian coast. #Melbourne #Australia

Our recent work has just been published in A&A! We developed a retrieval framework for the large-scale magnetic fields of objects emitting radio bursts driven by the electron cyclotron maser (ECM) instability. We applied it to the brown dwarf J0623, and found that it has a large magnetic obliquity!

MeerKAT Pulsar Timing Array team has announced evidence for the Gravitational Wave Background (GWB)! @cosmicrami.com had a chat with lead author @astromattmiles.bsky.social from @ozgrav.bsky.social www.spaceaustralia.com/feature/mpta... 📸 C. Knox/Swinburne/OzGrav/SARAO #SpaceAustralia 🔭🧪 1/3

Will the next US Solar & Space Decadal Survey acknowledge we need a follow-on, improved SDO? www.nationalacademies.org/event/44121_...

I learned about this paper (arxiv.org/abs/2406.09413) when Alexei gave this wonderful talk at the U. They trained 60K diffusion models, each for a different person's visual identity. Sampling weights from this set creates a model for a novel identity.

Out now in @theconversation.com, I write about our discovery of the first long-period radio transient with an optical counterpart -- our first clue to the progenitors of this mysterious class of objects! theconversation.com/astronomers-...

Just to be clear, SDO the spacecraft and payloads are fine. The data processing at Stanford is interrupted due to said server room incident. For those who can’t wait, GOES SUVI has some EUV channels similar to SDO AIA. www.swpc.noaa.gov/products/goe...

Jupiter looks particularly impressive because its strong magnetic field causes huge radiation belts which we can detect at #RadioAstronomy wavelengths. There's a full explanation of the image on this ATNF picture of the day page by @elenchically.bsky.social: www.atnf.csiro.au/ATNF-DailyIm...

When we're searching for radio transients we accidentally find other things that change between images... like planets! This image by our transient hunting guru Emil Lenc (@elenchically.bsky.social) shows some of the planets (plus the Moon) we've detected in our ASKAP surveys. #RadioAstronomy

My deep learning course at the University of Geneva is available on-line. 1000+ slides, ~20h of screen-casts. Full of examples in PyTorch. fleuret.org/dlc/ And my "Little Book of Deep Learning" is available as a phone-formatted pdf (nearing 700k downloads!) fleuret.org/lbdl/

We are about half way through our survey, with the Australian SKA Pathfinder telescope. In the next two years we will double the number of observations (and the number of discoveries) 🙂 Here's picture of our great telescope!

I’ve missed the technical posts and discussions. Looking forward to being illuminated by all the scattering interactions here.

Write math on 🦋 with UnicodeIt! For example: θ ∈ ℝⁿ or pp̅ → μ⁺μ⁻ Use website or install system-wide in Linux, macOS, or windows www.unicodeit.net (Created several years ago with @svenkreiss.bsky.social)

My teammates at Google finally published (in Nature!) one of my favorite projects: using millions of cellphones to map the ionosphere and improve GPS location accuracy: research.google/blog/mapping...

We're back after a break with CORF discussion of co-ordination efforts between NRAO and satellite constellation companies. 🔭🧪 Livestream: vimeo.com/event/4686731