Coming up on loss of signal as #ArtemisII goes behind the Moon. For the next 40 minutes humanity is divided into two - all of us, and four of them.

The truth about #aliens and #UFOs isn’t something you can explain in a few lines. It requires training in science and engineering to understand. Without that, most people won’t be able to grasp or accept it. #Disclosure #Education

Exoplanet WASP-39 Eleanor plus LightKurve demo With a little help from Claude Ai… 👨‍💻👨‍💻👨‍💻 github.com/JosephKarpin... #astronomy #astronomer #astronomers #Astrophysics #astrophysicist #TESS #Python #exoplanet #Claude

The Search for Living Worlds Beyond the Solar System 🔭 Don't miss the next WiCOR Lecture from Dr. Victoria Meadows (SETI Institute)! 📆 Wed. April 22 at 7:00 PM 📍The Marquee at Union South 🔗go.wisc.edu/wicor-lecture-sp2026 🧪 #Astrobiology #exoplanets #biosignatures #spectroscopy

At one of the highest points on the Green Bank Telescope, above the main dish, sit feed horns atop a rotating turret containing the receivers. 📸 Credit: NSF/AUI/NSF GBO 1/3 #astronomy #radioastronomy #nrao #greenbanktelescope

Colloquium Paper: Geospace pathfinder science at Arecibo Observatory journals.aps.org/rmp/abstract...

Colloquium Paper: Planetary radar at the Arecibo Observatory journals.aps.org/rmp/abstract...

Colloquium: Radio astronomy with the Arecibo 305-m telescope: In contemporaneous context journals.aps.org/rmp/abstract...

We’re excited to announce that the Wow! Signal has finally repeated. Same frequency. Same coordinates. The only difference, this time it spelled "4LI3N5". 🤔 #AreciboWow #WowSignal #SETI

New research note accepted to RNAAS! Yes, this is a serious science post today. 🧪 We've created a catalog of Gaia DR3 IDs that correspond to TESS Input Catalog IDs! No more cross-matching on your own or hoping the Gaia DR2/DR3 IDs are the same! arxiv.org/abs/2603.28850 🔭 #exoplanets

Ooo I quite like these plots, showing how well you detect things in an exoplanet (HAT-P-12b) spectrum with JWST (and HST) using combinations of instruments. Heinke+ arxiv.org/abs/2604.01219 🧪🔭 #exoplanets

We’re excited to announce that the Wow! Signal has finally repeated. Same frequency. Same coordinates. The only difference, this time it spelled "4LI3N5". 🤔 #AreciboWow #WowSignal #SETI

The Science of SETI: Inside the First Modern Textbook www.seti.org/news/the-sci...

"An icon of New Mexico, the Very Large Array (VLA) is due for an upgrade. Now years in the making, work on the next-generation antenna is getting ready to roll out." via @krqe.com www.krqe.com/news/new-mex... #NewMexico #RadioAstronomy #ngVLA #VeryLargeArray

Direct imaging of brown dwarfs and exoplanets provides our best look at atmospheres outside our solar system, and Beth Biller will help you make sense of all the data. #astronomy #exoplanets www.youtube.com/watch?v=zprl...

The beam on the Eiffel Tower is like a perfect dipole and extremely slowly rotating pulsar beam at optical wavelengths. The ones I’ll be observing this Saturday morning are radio waves from pulsars and rotate hundreds of times per second! Like a rapid strobe! 🕶️ #RadioAstronomy

We found a new #exoplanet around GJ 1137, a K dwarf just 91 ly away from us. GJ 1137 c is a super-Earth on a 9.6d orbit and a minimum mass of five Earth masses. 🪐🔭 1/6

A new solar system in the making? For the second time ever, two planets have been directly observed forming around a host star. Our VLT and VLTI have helped astronomers confirm the presence of a second gas giant orbiting the star WISPIT 2.  More: https://www.eso.org/public/news/eso2604/ 🔭 🧪

Got around to updating the summary of all rocky planet temperature measurements so far. Definitely inconsistent with thick, Venus-like CO2 atmospheres!!! A bare rock model fits the data well … but thin atmospheres/ not too much CO2 are still possible. Adapted from Kreidberg & Stevenson 2025.

Making some good headway here in the K2-18b saga. So far, there doesn't seem to be a need for the existence of Hycean worlds and/or DMS. Tsai+ arxiv.org/abs/2603.19803 🧪🔭 #exoplanets

#exoplanets 🪐

At dawn, at one of our Wow@Home small radio telescopes, searching for bright transients over the past year. #AreciboWow #Astrophysics #SETI #Technosignatures

ZTF J1239+8347: A mass transfer brown dwarf binary that could become a star 💫➡️⭐+🪐 Crazy that such a system exists www.caltech.edu/about/news/h...

NEW: My former student, now postdoc at ASIAA, Minchul Kam led a massive study of the gas distribution within the Bondi radius of the AGN 3C84, using KVN radio polarimetry. 🧪🔭 #extragalactic #radioastronomy

A story about our new, mysterious, long period transient. Interesting work by Joshua Pritchard and others, including (@elenchically.bsky.social, @manishacaleb.bsky.social, @funfactscience.com, @a-zic.bsky.social, @colourfulcosmos.bsky.social...) phys.org/news/2026-03... #RadioAstronomy #AstroSci

Hey! Come work with me at NExScI!!! #jobs #exoplanets JPL is hiring a new NExScI Executive Director to replace Chas, who will work with the Deputy Director (David Ciardi) and Chief Scientist (that's me!) in leading NExScI and our suite of impactful exoplanet programs. www.jpl.jobs/job/R5526/Ex...

📡 ALMA Cycle 13 Proposal Preparation Workshops 📡 This month, ALMA Ambassadors will host Cycle 13 proposal preparation workshops at institutes across North America and Chile (virtual options available). First workshop is March 20! #Astronomy #RadioAstro #ALMA

Looking for a postdoc in radio astronomy? We have an opportunity at @herts.ac.uk. Please share with anybody interested. Extreme Radio Flares from Young Stellar Objects (closing date: 2026-04-16) Apply here: ce0997li.webitrent.com/ce0997li_web... 🔭 #RadioAstronomy #highenergyastro #stellarastro

Nothing would be more poetic than if we had already detected simple life on Mars in 1976, and then intelligent life the following year, in 1977, with the Wow! Signal. 🤔 #VikingMars #WowSignal

I have an interstellar objects joke and I gotta say, it's going to fly right overhead

NSF NRAO to Host Spring 2026 VLA Open House The NSF Very Large Array's annual Spring Open House is Saturday, April 18, 2026, from 9 AM - 4 PM. This free, family-friendly event offers guided tours, talks by experts, hands-on activities, and more. #Astronomy #RadioAstro #NewMexico #VeryLargeArray

I love this stuff: combining models and observations to make sense of something, in this case exoplanet clouds. With lots of discussion (my favourite part of a paper). Kiefer+ arxiv.org/abs/2603.13167 More on exoplanet clouds and their Mg/Si ratio: Calamari+ arxiv.org/abs/2603.12479 🧪🔭 #exoplanets

Nothing would be more poetic than if we had already detected simple life on Mars in 1976, and then intelligent life the following year, in 1977, with the Wow! Signal. 🤔 #VikingMars #WowSignal

Did we already detect life on Mars 50 years ago? journals.sagepub.com/doi/full/10....

This is the largest open-source, freely available all-sky photo of the night sky. noirlab.edu/public/image...

Lost Doctor Who and the Daleks episodes discovered in 'ramshackle' collection www.bbc.com/news/article...

Happy eps Ind Ab day! Possible water clouds on this cool (also literally) planet from JWST images in the near- and mid-infrared. Sanghi+ arxiv.org/abs/2603.08787 Matthews+ arxiv.org/abs/2603.08780 🧪🔭 #exoplanets

Looking at some radio data hot off the MeerKAT telescope today! MeerKAT is a South African radio telescope with a huge field of view for astro. I'm calling this one "Radio Starry Night" bc a calibration error off that bright source has made a lovely swirly van Gogh sky if I may say so myself. 🔭🧪

Alien contact gets the Hollywood treatment in a movie called "Project Hail Mary" - and in the latest #FictionScience podcast, SETI astronomer Seth Shostak brings us up to date on the real-life search for alien contact. cosmiclog.com/2026/03/10/a... H/T @setiinstitute.bsky.social

I'm super excited to share a HUGE paper out from Young Worlds Lab team member Andy Boyle. I present for you, ~900,000 rotation periods from TESS! 🤯🔭🧪⭐ #exoplanets #stellarrotation arxiv.org/abs/2603.05586

New LPT who dis? #radioastro We've found a new long-period radio transient to add to the small but growing population! 📡🔭🧪 In a recently accepted @pasajournal.bsky.social Letter, Joshua Pritchard details the bursts detected from this system during a brief active period. arxiv.org/abs/2603.07857

ALMA Detects Extremely Abundant Alcohol in Interstellar Comet 3I/ATLAS New research reveals that 3I/ATLAS is packed with an unusually large amount of the organic molecule methanol – more than almost all known comets in our own solar system. #Astronomy #RadioAstronomy #3iatlas #ALMA

Welcome to the ATNF SkyViewer: www.atnf.csiro.au/research/sky... * Enjoy 🤩 #radioastronomy #astronomy #AstroSci

This artist's concept shows exoplanet Kepler-1649c orbiting around its host red dwarf star. This exoplanet is in its star's habitable zone and is the closest to Earth in size and temperature found yet in Kepler's data. image via @nasajpl.bsky.social #space #astronomy #exoplanets #nasa

Giant (900K) catalog of TESS rotation periods dropping on Monday. Email me for a preview. 🧪🔭⭐#exoplanets

Yesterday I participated in a wonderful event organized by the Astronomical Observatory of the University of Valencia. High school students prepared different messages to send to the potentially habitable exoplanet GJ 1002 b, whose discovery I led a few years ago. 🔭#exoplanets

Why SETI Might Have Been Missing Alien Signals www.seti.org/news/why-set...

“Radical mundanity” could explain why we haven’t met aliens – Sciworthy sciworthy.com/radical-mund...

Trying to explain the #WowSignal in one slide. 🧠🧵📡🤯 #AreciboWow

Zoom into a cosmic eye 👁️ This video takes you on a journey through space to one of the most visually intricate remnants of a dying star: the Cat’s Eye Nebula 🐈‍⬛ also known as NGC 6543. 🔭 🧪