私の指導教官の本間希樹さんがEHTに関連する研究で仁科賞を受賞しました。EHTの黎明期は日本のプレゼンスを国際的に確立するために本間さんと二人三脚でやってきたこともあり、自分のことのように嬉しくとても感慨深いです。VLBIの分野では３つ目の受賞、電波天文学では４つ目の受賞になります。そう考えると電波天文学やVLBIは物理学分野でもかなり健闘していると思います。 www.nao.ac.jp/news/topics/...

今月からイベント・ホライズン・テレスコープ(EHT)の副プロジェクトサイエンティストとして、EHTの運営チームに加わることになりました。プロジェクトサイエンティストのDe Laurentisさんと一緒に、500名以上の科学者が参加するEHTのコミュニティの国際的な科学運用を取りまとめることになります。来年には初のM87の動画撮影の観測が始まる重要な時期でとても楽しみにしています。

I'm happy to share that I've joined the management team of the EHT Collaboration (@ehtelescope.bsky.social) as Deputy Project Scientist! I'm honored to serve the EHT community—now over 500 scientists worldwide—as we enter this exciting era of capturing the first-ever movies of black holes.

Argh and I forgot the 🔭🧪 --> new black hole results look at first post! And also see: youtu.be/7P04NXrNp5U?...

Check out our new results on the M87* #blackhole w/ @ehtelescope.bsky.social ! We now have 3 frames in a 4yr "movie", including polarisation ⇔ magnetic fields. It's like tracking extreme sunspots just outside a black hole, the brightness and fields flip, yet the shape stays the same bc...gravity!

Groundbreaking new image! The EHT reveals the dynamic environment around black hole M87*. The 2021 image shows a distinct shift in polarization patterns, tracing changes in magnetic fields near the event horizon. eventhorizontelescope.org/new-eht-imag...

Imagine a donut...now squash it🍩. That's what the black hole inside M87* looks like! New EHT research reveals that the squishy distortion is not due to gravity, but the turbulent, swirling plasma around the black hole: www.aanda.org/10.1051/0004... #space #blackhole #astronomy #astrophysics

🌍📡 The global Event Horizon Telescope (EHT) team met earlier this month in Berlin for the 2025 Collaboration Meeting! 120+ researchers shared breakthroughs, planned 2026 observations, and discussed turning black hole images into time-lapse “movies.” #astronomy #blackholes #globalscience

Breaking: NSF is suspending roughly 300 grants with UCLA, following a DOJ finding on Tuesday that the university violated Title VI by "creating a hostile educational environment for Jewish and Israeli students."

Congratulations to Haystack director Phil Erickson! Phil gave the prestigious CEDAR Distinguished Lecture on June 23 at the recent 2025 NSF joint Coupling, Energetics, and Dynamics of Atmospheric Regions (CEDAR) and Geospace Environment Modeling (GEM) Workshop. www.haystack.mit.edu/news/erickso...

昨年度後半に東京電機大の学部生さんとやった卒論のプロジェクトが、2026年度の入学案内でハイライトされました。日米で検討が進むBlack Hole Explorer Missionの地上観測網に対して膨大な数の観測シミュレーションを行い、その評価をやっていただきました。MITにも来ていただいて、日米の若手研究者の交流の一環ともなりました。 www.d-pam.com/dendai/25143...

Could you starwatch all night? The IRAM 30-m telescope can!✨🌌 This observing mode is called VLBI, which involves telescopes around the world viewing the same object at the same time, such as a black hole, then combining the data to get super-high-resolution images.

"You asked, we answered!🫡 Here are some of our favorite questions from last Friday's Reddit Ask Me Anything for #BlackHoleWeek2025 Have more questions about the mysteries of black holes❓Read the full thread here: www.reddit.com/r/askscience...

東北大の田中さん、東京都市大の津村さんにお声がけ頂いていて、天文学の最新成果を解説する本の執筆に参加させていただきました。第一線で活躍している日本を代表する天文学者の皆さんに混ぜていただいて、私は超巨大ブラックホールの章を担当させていただいています。このような著者陣が集まる本は貴重だと思います。来週発売だそうです！ぜひご覧になってください！ www.kawade.co.jp/np/isbn/9784...

As we've seen this Black Hole Week, black holes have gone from theory to image, from mysteries to measurements. Now, the EHT is entering a new era, where more telescopes around the world — and maybe in space — will capture time-lapse “movies” of black holes. Popcorn, anyone?🎥🍿

It is starting in 2 hours!

The AAS is aware of reports of pending restructuring and more grant cancellations at NSF, and is working to learn more and formulate a response. If you have been directly impacted, please share your story (aas.org/form/share-y...) or contact us at [email protected].

Hey I've been busy grading, but that doesn't mean it's not #BlackHoleWeek! Have burning questions about black holes? Join me and some of my colleagues from @ehtelescope.bsky.social for a Reddit AMA, today from 3-5 PM ET (19-21 UTC)!

About 27,000 light years away, with a mass of more than 4 million Suns, lies the Milky Way’s supermassive black hole Sagittarius A*. If you were to approach it, you’d be deceived by its size - the shadow is roughly twice as big as the black hole’s actual surface!⚫️

Behold Perseus A, one of the closest active supermassive black holes, at 230 million light years away. Composite images like this one from the NRAO, Chandra, Hubble, and the EHT can help us study black holes and their environments, which influence each other.🛰️

Centaurus A is the closest radio galaxy to Earth. Radio galaxies feature two-sided jets that are ejected from the galaxy’s central black hole and measure up to millions of light years long. These jets are theorized to spread energy and affect the growth of their host galaxies.💫

"It’s like I have to choose between my life and my career." The personal stories of 5 scientists affected by Trump's assault on science. www.science.org/content/arti...

Happy Black Hole Week! This is Messier 87; despite being located about 55 million light years away, the EHT peered at its beating heart in 2017 for its first image. Did you know that the location of the brightest region around the black hole, and its shadow, can change yearly?🔭 #BlackHoleWeek2025

Ever wonder how to study the nature of spacetime and the edges of physics? These mischievous black holes have a clue! Join the Event Horizon Telescope for #BlackHoleWeek2025, May 5th-9th, as we highlight pieces of the black hole science jigsaw puzzle.🌟 #astronomy #astrophysics #blackholes

If you are US residents or citizens and support science, please join us the “Week of Action 2025” organized by the American Astronomical Society (@aas.org) next week. Call your representatives and let’s remind Congress why federal funding for science matters. aas.org/posts/news/2...

If you are US residents or citizens and support science, please join us the “Week of Action 2025” organized by the American Astronomical Society (@aas.org) next week. Call your representatives and let’s remind Congress why federal funding for science matters. aas.org/posts/news/2...

President Donald Trump today asked Congress to make massive and unprecedented cuts to the 2026 budgets of major federal science agencies. scim.ag/3Yszqnm

US President Donald Trump’s proposed budget for fiscal year 2026 calls for unprecedented cuts to scientific agencies that, if enacted, would deal a devastating blow to US science, policy specialists say. https://go.nature.com/4jYv3IP

NSF just revised its indirect cost policy—15%. When NIH tried the same, it led to lawsuits, layoffs, and a federal court injunction. Changes like this can wreak havoc on research. MORE ACTION ITEMS TO COME SOON. Stay tuned. www.nsf.gov/policies/doc... #NSFFreeze #WithoutNSF

The National Science Foundation, a major government funder of basic science research, is being shaken up with over 1,000 grants already terminated and the White House looking to halve its budget.

US ground-based astronomy has been largely funded by NSF, including EHT, as well as NRAO that operates world-leading radio telescopes. This will cut ~70%+ of the budget for the infrastructure, including buildings, equipment, and administrators, causing catastrophic damage to basic science research.

Group Letter To Congress Regarding FY2026 NASA budget nasawatch.com/congress/gro... #NASA

NEW: ALMA Detects First-Ever Hydrogen Recombination Lines From Proplyd Disks in Densely Packed Orion Nebula Cluster Archival data points the way toward new ideas for characterizing planet-forming disks with upcoming #ALMA upgrades and #ngVLA telescopes. #RadioAstronomy #Astronomy

2025 AO Astrophysics Small Explorer (SMEX) Release Postponed NASA SMD has determined that the AO Astrophysics Explorers Program 2025 Small Explorer release will be postponed until no earlier than April 2026. Identification Number:NNH25ZDA008J Short URL: go.nasa.gov/NNH25ZDA008J

The deadline for requests for funds for NASA and NSF from Marylanders was extended to tomorrow at 6pm. Use your voice! 🧪🔭🦀

Observing the sky for days at a time is hard work - for pets and humans🐈! Here are some of the incredible astronomers who made the 2025 EHT Observing Campaign a success.🌟 See more on our Instagram: www.instagram.com/p/DI4xFR0NSC...

Here's how to ask your Senators for *specific* funding levels for NASA, NSF, and Department of Energy Office of Science. It's simpler than you think! @aas.org @policy.aas.org 🧪🔭

Action items: 1) Call reps to explain how NASA funding impacts you; 2) Urge reps to sign the bipartisan Congressional letter advocating for $9B in NASA SMD FY26 funding; 3) ask rep to support NASA SMD budget through a constituent appropriations request; 4) set up meeting with staff of your rep. 🔭🚀🧪

From Skylar Grayson/Cole Meldorf/Abby Lee/Drew Lapeer/Catherine Slaughter: NASA is facing severe budget cuts that would cancel missions ready for launch, put tens of thousands out of jobs, and set science back decades. We need your help to ask Congress to prevent this! astrobites.org/2025/04/15/h...

The global array of the Event Horizon Telescope has been now extended into East Asia. Korean VLBI Network became the first one to join the EHT from the East Asian VLBI Network.

Skyscrapers aren't the only towering structures in Seoul, South Korea - the KVN Yonsei telescope makes its home in the bustling city🇰🇷🏙️. The telescope is the furthest east in the EHT, filling an important gap between Europe and Hawaii to make more accurate black hole images.

You shouldn't stare directly at the Sun - but the JCMT can☀️! A unique membrane in front of its antenna lets radio waves through while reflecting visible and near-infrared light, allowing JCMT to make daytime observations. JCMT sits on the dormant volcano Mauna Kea in Hawaii🌺.

Last but not least, say hello to the SMA, also located on Hawaii's tallest mountain, Mauna Kea🌈🌋! The telescope's eight 6-meter radio dishes all work together to act as one telescope that studies black holes with the EHT, as well as the births of planets, stars, and galaxies.

Breaking news: The U.S. Department of Energy today announced it is unilaterally cutting in half the overhead rate on its academic grants, something that a federal judge recently told the National Institutes of Health it could not do.

6 years ago this week, the Event Horizon Telescope released the world's first black hole image🎉🎊 #blackhole #astronomy #astrophysics

The American Astronomical Society is gravely concerned by the deep cuts to NASA science funding reported to be in the draft President’s Budget Request for Fiscal Year 2026. Read more here: aas.org/press/aas-st... and take action now: aas.org/urge-nasa-su...

The cuts "would kill the much-anticipated Nancy Grace Roman Space Telescope, an observatory seen as on par with [Hubble & JWST] that is already fully assembled and on budget for a launch in two years." Would also apparently close NASA's Goddard Space Flight Center. Huge, HUGE loss for science.

NOEMA, located in the French Alps, has "vision" sharp enough to see someone's computer 500 km away in Venice👀💻. Its 12 dishes operate together like a single dish with a diameter of 1.7 km, making NOEMA the most sensitive array of its kind in the northern hemisphere.