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[Caltech @Caltech]

Caltech Readies to Build World's Most Sensitive Radio Telescope.

Schmidt Sciences has greenlit the construction of the @deepsynoptic, a game changer for radio astronomy.

https://t.co/iZ4hFZjf8b

[The Deep Synoptic Array @deepsynoptic]

The NNRY Star Train in Ely is a unique way to enjoy the dark skies. And it was just featured in @nytimes! For the past two years, @CaltechAstro and the DSA provided professional astronomer volunteers that helped passengers learn more about the night sky: https://t.co/dfjeSqIKdZ

[ZTF Survey @ztfsurvey]

Turning 78 today with no thoughts of retiring! Happy birthday, Palomar Observatory!!! Just like every other night, tonight we will open the dome and point the @ztfsurvey camera towards the dark skies. Undoubtedly, the universe will treat you to a lovely fireworks show!

[Caltech Astro Outreach @CaltechAstro]

Join us for a FREE afternoon of science demonstrations, solar telescopes, and public-level presentations on black holes, exoplanets, galaxies, and more. Come learn about space with scientists from Caltech, NASA JPL, Carnegie, LIGO, etc. More info at:
https://t.co/KfA6JKIYTw

[ZTF Survey @ztfsurvey]

Wait? What is shining so brightly atop Palomar mountain under the strong rays of the California sun? It's the newly painted dome that houses the 48" telescope with the robotic @ztfsurvey camera, our tireless explorer of the transient universe! Great work, team!

[Caltech @Caltech]

LIGO-India broke ground on April 23, 2026, at Aundha in the Hingoli district of Maharashtra, located in the western peninsular region of India.

https://t.co/E4XGD0w5mX

[Dibyendu Nandi @ydnad0]

If you are in Malda or North Bengal, interested in the night skies 🌠 and want to try your hand at building your own little telescope 🔭I highly recommend this workshop conducted by @IUCAApune These are a fantastic bunch of talented astronomy outreach folks from Pune I know.

[John Preskill @preskill]

From dream to reality: The bridge connecting quantum information and matter to high energy physics @Caltech now exists.

[LIGO India @LIGOIndia]

In order to promote interest in Astronomy,
LIGO-India Education and Public Outreach (LI-EPO) created amateur astronomy clubs ("Khagol Manch") in each taluka (sub-district) in the Hingoli region near the LIGO-India site.⭐

[Aditya-L1 Support Cell @AdityaL1SC]

𝓐𝓷𝓷𝓸𝓾𝓷𝓬𝓮𝓶𝓮𝓷𝓽:
@AdityaL1SC is happy to announce that Registration Link for 13th @AdityaL1SC Workshop is now open. Visit the following link for details: https://t.co/R5z45IGOqs
@ARIESNainital @isro

[ARIES @ARIESNainital]

🇮🇳’s 1st #satellite Aryabhata, named after eponymous mathematician-astronomer, by @isro was launched on 19/04/1975, marking 🇮🇳's entry into #SpaceAge. The payloads were made for X-ray Astronomy, Aeronomy & Solar Physics. The day is commemorated as #SatelliteTechnologyDay.

[LIGO India @LIGOIndia]

🌌 Gravitational-Wave Instrumentation Summer Workshop 2026 🌠 Embark on an in-depth, hands-on exploration of the science and technology behind gravitational-wave detection.
📌Scan the QR code for details and registration #workshop #instrumentation #engineers #gwscience

[The Paperclip @Paperclip_In]

This is a photograph of Albert Einstein with an unassuming Indian man you probably haven’t heard enough about. He spent his life working on one idea: women should be able to live with dignity and make their own choices. Thread.

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[Les Guthman 🇺🇦 @LesGuthman]

AWARD! In the first festival for our new @LIGO film, “Squeezed Light: Breaking the Quantum Limit,” we won the Finalist Award for Best Documentary at the Physics on Film festival in London this coming weekend. And it’s on the program with INTERSTELLAR!!

[Ananda Hota @hotaananda]

Celebrating 13th anniversary of #RADatHomeIndia #CitizenScience research in Indian astronomy. @radathomeindia

[Haimeng Zhao @haimengzhao]

⚛ Can small quantum computers accelerate AI on massive classical data? Yes!

I am absolutely thrilled to share our new work proving *honest* exponential quantum advantages in broadly applicable classical tasks. 🧵👇

Paper: https://t.co/q1txrakSUJ
Blog: https://t.co/77svcuQ1Yl

[Annapurni Subramaniam @fiddlingstars]

This is so amazing!

[Caltech Alumni Association @caltechalumni]

Caltech alum Mansi Kasliwal (MS '07, PhD '11) has come full circle: from a visit to Palomar Observatory that sparked her scientific path to becoming its first female director. Read about her journey on Techer: https://t.co/X9DoqxWZGC.

[Caltech IPAC @caltechipac]

How do you explore the most crowded area of the Milky Way? With precision and persistence 🔎

@NASARoman is gearing up to study this region with the Galactic Bulge Time-Domain Survey. Read more about Roman's observing plans & IPAC's role here: https://t.co/Cil3GCMYnS

[ZTF Survey @ztfsurvey]

Special thanks to Sam Rose (Caltech), Gautam Vashisht (NASA JPL), Diana Roderick and Isaac Wilson (Palomar Observatory) who stopped looking at the stars for a moment to capture a stellar moment in our human history.