Introducing over 11,000 new members of the Solar System...and our main survey hasn't quite started yet! ☄️ Using pre-survey observations from 2025, NSF–DOE Rubin Observatory scientists have reported more than 11,000 new asteroids and comets! 🔭🧪 🔗: rubinobservatory.org/news/11000-n...

The CDC has paused testing for rabies and pox viruses. It's vital we keep a close eye on them as rabies is virtually 100% fatal without vaccination, and smallpox killed hundreds of millions (we really don't want a similar virus returning). Losing track of these viruses is a recipe for catastrophe.

🔴 LIVE NOW: the first launch opportunity for #Artemis II and Orion, powered by its European Service Module, is tonight 23:24 BST/00:24 CEST 2 April. 📺 Live on watch.esa.int/Two/ @exploration.esa.int

Please spread the word! In addition to becoming an important part of the MESA project, the person in this role would have opportunities to collaborate on scientific software across CCA, which has a vibrant, interactive community of scientists and code developers.

Hundreds of millions of people live close enough to data centres used to power AI to feel warmer average temperatures in their local area

Happy birthday to Wilhem Röntgen (1845-1923), the German physicist who discovered x-rays and earned the Nobel Prize for physics in 1901. 🎢🐡🧪 #histsci I’ve depicted him in this thermochromic portrait at work, studying this mysterious, newly discovered, invisible form of light, based on a photo of 🧵

Halfway Through the Fiscal Year, NIH Has Only Obligated 15% of Research Funding The science community fears the funding agency’s slow contract and grant making could result in another rush of multiyear obligations at the end of the fiscal year. https://bit.ly/4btAe2c #EDUSky #HigherEd #AcademicSky

The globular cluster M53 in Coma Berenices. #astronomy #astrophotography

Physicists have succeeded for the first time in transporting the most expensive and most volatile substance on Earth — antimatter - in a truck go.nature.com/4v49mxA

Very nice to see this paper, on dense matter Equation of State informed pulse profile modelling of neutron stars - led by Mariska Hoogkamer and Nathan Rutherford - published as an Editors' Suggestion in Physical Review D. #highenergyastro 🔭⚛️🧪 journals.aps.org/prd/abstract...

Watch as the Crab Nebula changes over time with Hubble. Two images, taken 25 years apart, show the ongoing expansion of a supernova remnant: https://news.stsci.edu/4bAN6m4 🔭

If you want an accessible book that introduces the cosmos through visual art, check out Painting the Cosmos by Nia Imara, an astronomer at UC Santa Cruz. All the images are in color! 🔭🧪 #BookSky #BlackInAstro www.simonandschuster.com/books/Painti...

What's the value of having telescopes in space? Seeing change over human time scales. Plus the Crab Nebula is gorgeous. Latest from Hubble. science.nasa.gov/missions/hub...

I wrote a thing! Rubin and LSST are not only going to find a kajillion asteroids, they'll get lightcurves and colors at the same time, and the science is going to be phenomenal skyandtelescope.org/astronomy-ne...

Now on ArXiv: we may have detected atomic absorption features due to highly ionized oxygen and neon from the surface of the neutron star RX J0822-4300 in the supernova remnant Puppis A. arxiv.org/abs/2603.14146

Fun!! 🔭

Now on ArXiv: we may have detected atomic absorption features due to highly ionized oxygen and neon from the surface of the neutron star RX J0822-4300 in the supernova remnant Puppis A. arxiv.org/abs/2603.14146

Via @sciam.bsky.social: On modern rocketry’s 100th anniversary, SpaceX quietly hit another astonishing milestone, surpassing 10k Starlink satellites in orbit. By @astrojonny.bsky.social w viz by @unamandita.bsky.social & assist from @planet4589.bsky.social www.scientificamerican.com/article/spac...

Why many Pacific Islanders don’t trust scientists, exhibit n+1: “More than 300 Marshallese were removed from their homeland to make way for the US nuclear program, which commenced 80 years ago this year.” 🧪

Take two minutes to urge your House member to sign onto a Dear Colleague Letter in support of DOE Office of Science here! aas.org/urge-your-re...

In this documentary by Ben Proudfoot, Jocelyn Bell Burnell tells her story about being raised as a Quaker, her struggle being the only woman in the room in STEM & how hard it was to pursue that path against the attitude that women were to be in the home. womeninastronomy.blogspot.com/2026/03/i-ch...

Happy π day! Here’s a color-coded representation of the first 10,000 digits. Read it left-to-right and top-to-bottom. 🧪 🎢 🧮

The @aas.org is conducting a search for the AAS Editor in Chief, who is responsible for developing and implementing a long-term editorial strategy for the Society’s journals portfolio. See this link for more details of this full-time position and the application process. journals.aas.org/eicsearch

For the first time, astronomers witnessed the birth of a ‘magnetar’ www.popsci.com/science/firs...

EHT scientists Sera Markoff & Vincent Fish were recently interviewed on Quirks & Quarks, a Canadian science story broadcast. Listen to the conversation to learn how the EHT is working toward creating videos of black holes! www.cbc.ca/radio/quirks...

Yup

NASA has so many questions to answer about the Probe selection process. First there were the shenanigans surrounding the initial downselect (when the advice of expert review committees was ignored, for reasons that remain opaque) [see spacenews.com/nasa-defends...

New NICER neutron star results this morning, led by Yves Kini! For the first rotation-powered millisecond pulsar we ever reported on, PSR J0030+0451. More data (6 years!), background constraints fully incorporated, and improved sampling. #highenergyastro 🔭🧪 arxiv.org/abs/2602.23743

We're happy to announce a newly signed agreement for the construction of the Africa Millimeter Telescope (AMT). This will open great possibilities for astronomy on the African continent and make black hole images even sharper! #astronomy #blackholes #EHT #AMT #africa

oh my god while I was disappointed that AXIS was selected over STROBE-X, I would not have ever wanted their concept study not to proceed and this is a loss for the entire field and a sign of how much Donald Trump and his goons have damaged science in the United States and NASA in particular 🔭🧪

The American Astronomical Society has a page with more info and how you can submit comments to the FCC to stop this travesty. Hurry though; submissions end today. aas.org/action-alert...

The FCC has opened public comments for a couple of different proposed satellite systems, both of which have a high likelihood of significantly degrading our ability to experience the night sky. More details from @aas.org here: 🧪

Astronomers for Planet Earth are submitting a statement about some of the proposed megaconstellations that would ruin ground-based astronomy to the FCC. You can read the statement below: 🔭☄️

Applications are open for our visiting grad student pre-doctoral program at the CCA @flatironinstitute.org ! More info here: www.simonsfoundation.org/2023-flatiro...

White House stalls release of approved US science budgets

OPPORTUNITY: The Space Telescope Science Institute in Baltimore, MD, is searching for a Senior Full Stack Engineer to join the Web Application Services Branch, performing software development, support and maintenance of applications and processes to our NASA missions: https://bit.ly/4l9HF1Q

BBC: I went to rural Wales to bathe in starlight and the Milky Way blew me away #Astronomy #Space www.bbc.co.uk/news/article...

It is a truth universally acknowledged that babies love bubbles 🔭🧪

New article out about what a million satellites could do to our atmosphere. It's bad. https://theconversation.com/a-new-space-race-could-turn-our-atmosphere-into-a-crematorium-for-satellites-276366

Record-breaking natural laser discovered 11 billion light-years away Lasers aren't just technological inventions here on Earth, but are also produced naturally in astrophysical environments. We just found one 11 billion light-years away: a new record. bigthink.com/starts-with-... #physics #astro

Rubin Observatory has started paging astronomers 800,000 times a night www.scientificamerican.com/article/rubi...

"NSF-DOE Rubin issued 800,000 alerts the night of Feb. 24. The alerts called scientists' attention to new asteroids, exploding stars and other changes in the night sky. This milestone marks the launch of a system expected to eventually produce up to 7 million alerts per night." 🔭🧪

Jocelyn Bell and Anthony Hewish announced their discovery of a “rapidly pulsating radio source” — what we now refer to as a pulsar — with a paper in @nature.com #OTD in 1968. 🧪 🔭 ⚛️ www.nature.com/articles/217...

Open call to join NewAthena X-Ray Observatory 🌟 I'm a member of the Compact Objects working group & used to be ground support for Chandra and XMM-Newton X-Ray Observatories ✨I highly recommend scientists at any career stage to apply - not competitive!! Deadline 1 March! indico.ifca.es/event/3385/

The FCC just opened public comments on SpaceX's plan to launch a million satellites to do AI compute in space. Under the current proposal, an environmental review won't be required. Please consider submitting a public comment to oppose this damaging plan. darksky.org/news/two-sat...

Really nice essay by @cosmolooney.bsky.social about the importance of pursuing scientific ideas that turn out to be wrong: "This is not a reason for despair; being wrong is not the same as failing." 🧪🔭⚛️ #cosmology www.firstprinciples.org/article/some...

In a previous #physics post I discussed how to measure the radius of the Earth using LEGO - well, I finally have data and measured the Earth for myself. #flatearthers can repeat if they want. #astronomy rjallain.medium.com/measure-the-...

VLITE Marks 11 Years of Capturing the Dynamic Radio Sky A collaboration between the U.S. Naval Research Laboratory and the NRAO celebrates over a decade of commensal observing with the NSF Very Large Array. @usnrl.bsky.social #Astronomy #RadioAstronomy