On the 🔭🧪 postdoc job market? Excited about science with Rubin and big surveys? Come join us at DiRAC. I’m so excited that we’re able to offer a few of these Fellowship positions this year! Please share, LMK if you have Q’s! aas.org/jobregister/...

Pythagorean Triple Square Day, as one man affectionately calls 9/16/25, is a day like no other this century.

youtu.be/Jx5SxWqpjjI 🔭 AAS Journal Author Series: Richard Zeebe and David Hernandez on 2025AJ....170...71Z Richard Zeebe (University of Hawaii at Manoa) and David Hernandez (Yale University) chat about their article on stellar flybys of the solar system and their (lack of) effect on the Earth.

Sorry Google and @wikipedia.org but this is not correct. Half of the Nobel prize was awarded to Penrose for the mathematical theory of black holes; the other half to Genzel & Ghez for their study of Sgr A*. (Thanks @nytgames.bsky.social Connections for alerting me to this!)

TIL that I study “space balls” (71 down in Sunday’s NYT crossword).

The Rocky Worlds DDT has published our final target list. Join us for an information session on September 15 to learn more about the 9 targeted planets and the goals of the program. 🔭 #exoplanets

Hey #exoplaneteers (and other early career folks) - applications for the 2026 NASA Hubble Fellowship Program are open! www.stsci.edu/stsci-resear...

The exoplanet TRAPPIST-1 d intrigues astronomers looking for possibly habitable worlds beyond our solar system because it is similar in size to Earth, rocky, and resides in an area around its star where liquid water on its surface is theoretically possible. (1/5) 🧵 🔭 🧪

Today on the #arXiv: Santana-Ros et al. 2025, "Temporal Evolution of the Third Interstellar Comet 3I/ATLAS: Spin, Color, Spectra and Dust Activity" - arxiv.org/abs/2508.00808 The nucleus of #3I/ATLAS remains confused with the coma.

We are pleased to announce the release of the #JWST Cycle 5 Call for Proposals for General Observer and Survey time and funding for Archival Research programs. Read more: ow.ly/IjWC50WyF62

aww yeah ☄️ 🔭 🛰️ arxiv.org/abs/2507.21967

Big day for the matriarchy! 🥳 Huge congrats to the awesome Prof. Doughtery, lead on the Jupiter-bound ESA JUICE mission & STFC Exec Chair. If anyone's confused on the astro royal hierarchy: Michele and I are the astro equivalents of 🇬🇧Westminster and 🏴󠁧󠁢󠁳󠁣󠁴󠁿Holyrood 🤗 ℹ️: www.bbc.co.uk/news/article... 👩‍🔬🔭🧪

Scientists have released the closest images ever taken near the sun, captured by NASA’s Parker Solar Probe flying 3.8 million miles above the solar surface. See more images of solar eruptions on the sun: wapo.st/3Irm3P3

A tiny ray of light - 51 Peg B postdoc applications just opened, and UW Seattle is a host institution! I'm our new institutional contact - more soon but reach out if you have questions! ☺️

All those cameras at Mars in October....

For any asteroid observers who have not heard about it already: Newly-discovered #A11pl3Z is a candidate interstellar object. cneos.jpl.nasa.gov/scout/#/obje...

New paper out! This is a review of the published JWST observations of rocky exoplanets so far: arxiv.org/abs/2507.00933 Quick summary of the key points:

@nytimes.com article about Nate Kaib's and my recent paper on the future stability of the Solar System when passing stars are accounted for. www.nytimes.com/2025/06/28/s...

I just found the source of dark energy

Dr. Vera Rubin is the first Astronomer to be featured on a US Coin. Rubin is also the namesake of the new Rubin Observatory in Chile, honored for her discovery of evidence of dark matter in galaxies. rubinobservatory.org www.usmint.gov/news/press-r...

I'm talking about how the fear of orcas affects baleen whales on Monday at Science on Tap in Seattle, always an incredible audience asking lots of interesting questions www.scienceontap.org

Here it is: www.youtube.com/watch?v=MIJf...

@plotastro.bsky.social This is a pretty visualization of hydrocarbon opacities in the atmosphere of Titan in arxiv.org/abs/2506.12144

Introducing...your sneak peek at the cosmos captured by NSF–DOE Vera C. Rubin Observatory! Can you guess these regions of sky? This is just a small peek...join us at 11am US EDT for your full First Look at how Rubin will #CaptureTheCosmos! 🔭🧪 #RubinFirstLook ls.st/rubin-first-look-livestream

I’m verklimt.

Apparently we’ve been observing transiting exoplanets all wrong…

Transit-timing variations grow with orbital period, enabling detection of low-mass planets, invisible to other techniques (radial-velocity, astrometry or direct imaging), in their stars' habitable zone (HZ). This work detects an HZ planet using Kepler data of a transiting exoplanet.

Save NASA Science: Please join me in signing this petition from The Planetary Society, urging Congress to reject the deep cuts to science that have been proposed by the administration. www.planetary.org/advocacy-act...

Wikipedia (English) features a planet system which we announced eight years ago.

One week ago, I saw this post by @aas.org encouraging its members to write op-eds about why space research should remain a national priority, and I decided to put pen to paper. Here's the result: a call to support one of the most captivating quests in all of science.

A wild @norashipp.bsky.social appears!

JWST has detected infrared light from the coldest giant planet found to date - and it orbits a white dwarf, causing the white dwarf to dip in brightness by ~50% every orbit: arxiv.org/abs/2504.16982

I wrote a research note about the recent publication of the MIRI/LRS spectrum of K2-18b. The authors had claimed the detection of potential signs of life. I find the data to be consistent with a flat line 🔭🧪

Just a reminder that K2-18 has star spots that can affect your results if not properly accounted for ui.adsabs.harvard.edu/abs/2021AJ.....

The James Webb Space Telescope imaged young, giant exoplanets and detected carbon dioxide! The findings suggest that the giant exoplanets in the HR 8799 system likely formed like Jupiter and Saturn. (1/5) 🔭 🧪 🧵

🔭 The JWST Cycle 4 science program is out today! 🔭 Some truly exhilarating #exoplanet programs will be carried out by JWST starting in July 2025. Let's take a look at some highlights. 🛰️🔭🪐 THREAD (1/9)

Never forget what russia has done to Mariupol. There can be no lasting peace in Europe without justice for this. It's either peace through strength and accountability, or more wars through appeasement and concessions. No third way.

The planet TOI-2015b hosts a planetary companion, TOI-2015c, but not the one previously announced. High-precision radial velocity (MAROON-X) + transit-timing variations (TESS+) reveal a planet companion near a second-order resonance with the transiting planet. arxiv.org/abs/2502.07074

Hooray for some good news!

Remarkable complete Einstein ring in NGC 6505 ("Altieri's lens").

@bot.astronomy.blue signup

The lunar occultation of Mars by the Wolf Moon, captured by Chirag Upreti, Bronx, New York, USA, 13 January 2025, 21:23 local time. Equipment: Sony A7R3, Sony 200-600 lens with X2 teleconverter, ISO 200, 1200mm, f/14, 1/100sec. www.skyatnightmagazine.com/news/mars-wo...

🧪🔭 Attending AAS in DC this January? Join us at our introduction to Julia programming for astronomy workshop! #julialang

Awesome to see over 100 small (~10m) asteroids discovered in the foreground of TRAPPIST-1! news.mit.edu/2024/mit-ast... The original goal of our observations (and others) was to study the atmospheres of the TRAPPIST planets, but there are also many asteroids zooming by (movie cred: Sebastian Zieba)

Tile the sky with Kepler, please.

aas.org/press/planet... A milestone for The Planetary Science Journal. Thanks to all who made this possible. 🔭