Tootfinder

A rarely seen seven-arm octopus was captured on camera 2,300 feet below the surface in remarkable deep-sea footage.
The species
— formally known as the seven-arm octopus (Haliphron atlanticus)
— was recorded by the remotely operated vehicle Ventana, operated by the team at the Monterey Bay Aquarium Research Institute (MBARI).
According to MBARI, the encounter occurred during a recent expedition in Monterey Bay and marks only the fourth time the organisation has observed…

Rarely-Seen Seven-Arm 'Blob' Octopus Filmed by Underwater Camera
These researchers have only filmed the species four times in 40 years.

JWST and Keck Observations of the Off-Nuclear TDE AT 2024tvd: A Massive Nuclear Star Cluster and Minor-Merger Origin for its Black Hole
Kishore C. Patra, Ryan J. Foley, Nicholas Earl, Kyle W. Davis, Enrico Ramirez-Ruiz, V. Ashley Villar, Sebastian Gomez, K. Decker French, Kirsty Taggart, Prasiddha Arunachalam, Phillip Macias, Ravjit Kaur, Samaporn Tinyanont
htt…

JWST and Keck Observations of the Off-Nuclear TDE AT 2024tvd: A Massive Nuclear Star Cluster and Minor-Merger Origin for its Black Hole
We present JWST/NIRSpec and NIRCam observations of the first optically selected off-nuclear tidal disruption event (TDE), AT 2024tvd, along with Keck/KCWI integral field unit spectroscopy. The spectra show broad H and He emission lines that are characteristic of a TDE. Stellar kinematics show smooth host-galaxy morphology and ordered bulge rotation, with no evidence of disturbances in velocity, dispersion, age or metallicity space. We construct the first quasi-simultaneous spectral-energy distr…

Frequency stability of $2.5\times10^{-17}$ in a Si cavity with AlGaAs crystalline mirrors
Dahyeon Lee, Zoey Z. Hu, Ben Lewis, Alexander Aeppli, Kyungtae Kim, Zhibin Yao, Thomas Legero, Daniele Nicolodi, Fritz Riehle, Uwe Sterr, Jun Ye
https://arxiv.org/abs/2509.13503

Frequency stability of $2.5\times10^{-17}$ in a Si cavity with AlGaAs crystalline mirrors
Developments in ultrastable lasers have fueled remarkable advances in optical frequency metrology and quantum science. A key ingredient in further improving laser frequency stability is the use of low-noise mirror materials such as AlGaAs crystalline coatings. However, excess noise observed with these coatings limits the performance of cryogenic silicon cavities with AlGaAs mirrors to similar levels achieved with conventional dielectric coatings. With a new pair of crystalline coated mirrors in…

Remarks on propagation of discontinuities in stationary radiative transfer
Daisuke Kawagoe
https://arxiv.org/abs/2510.12130 https://arxiv.org/pdf/2510.1213…

Remarks on propagation of discontinuities in stationary radiative transfer
We consider the stationary transport equation with the incoming boundary condition. We are interested in discontinuities of the solution. Under the generalized convexity condition, it is known that it has only boundary-induced discontinuities, which are discontinuities arising from discontinuous boundary data, they propagate along positive characteristic lines, and we can reconstruct the attenuation coefficient from boundary measurements by the inverse X-ray transform. In this article, we obser…

The Importance of Being Adaptable: An Exploration of the Power and Limitations of Domain Adaptation for Simulation-Based Inference with Galaxy Clusters
Michelle Ntampaka, A. Ciprijanovic, Ana Maria Delgado, John Soltis, John F. Wu, Mikaeel Yunus, John ZuHone
https://arxiv.org/abs/2510.09748

The Importance of Being Adaptable: An Exploration of the Power and Limitations of Domain Adaptation for Simulation-Based Inference with Galaxy Clusters
The application of deep machine learning methods in astronomy has exploded in the last decade, with new models showing remarkably improved performance on benchmark tasks. Not nearly enough attention is given to understanding the models' robustness, especially when the test data are systematically different from the training data, or "out of domain." Domain shift poses a significant challenge for simulation-based inference, where models are trained on simulated data but applied to real observati…

Deep uGMRT observations for enhanced calibration of 21 cm arrays -- I. First image and source catalogue
Khandakar Md Asif Elahi, Samir Choudhuri, Nirupam Roy, Md Rashid, Philip Bull, Dharam Vir Lal
https://arxiv.org/abs/2510.09571

Deep uGMRT observations for enhanced calibration of 21 cm arrays -- I. First image and source catalogue
Radio-interferometric arrays require very precise calibration to detect the Epoch of Reionization 21-cm signal. A remarkably complete and accurate sky model is therefore needed in the patches of the sky used to perform the calibration. Instruments such as HERA, which use a redundant calibration strategy, also require a reference sky model to fix degenerate gain solutions. We have carried out a deep (20 hours) observation using the upgraded GMRT to make a high-fidelity sky model of one of the HE…

Hubble reveals complex multi-scale structure in the edge-on protoplanetary disk IRAS 23077 6707
Kristina Monsch, Joshua B. Lovell, Karl R. Stapelfeldt, Sean M. Andrews, Ammar Bayyari, Alice S. Booth, Adolfo S. Carvalho, John H. Debes, Jeremy J. Drake, Joshua W. J. Earley, Cecilia Garraffo, Garrett K. Keating, Michael L. Sitko, David J. Wilner
https://

Hubble reveals complex multi-scale structure in the edge-on protoplanetary disk IRAS 23077+6707
We present high-resolution (<0.1") Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) imaging of the near edge-on (i~80 deg) protoplanetary disk IRAS 23077+6707 ("Dracula's Chivito") obtained across six broadband filters spanning 0.4-1.6 microns. These observations unveil the scattered light from this unusually large disk (~14", or ~4200 au at 300 pc) in remarkable detail, revealing a rich tapestry of substructure, including brightness asymmetries and signatures of dynamical activity. Exte…

Also some good museums..

• The Maritime Museum (aka "our friend, the offshore oil platform").
• Provost Skene's house with a remarkable secret Catholic ceiling
• The Aberdeen Art Gallery which has an interesting and unusual collection, particularly of glass and ceramics

Observers worry that Trump might abuse the power of the Insurrection Act.
Given his propensity to lie and exaggerate about the immigration crisis
-- such as the false rumors he helped spread about Haitian immigrants in 2024
-- Trump might use similar false claims to justify sending troops into American cities.
During his first term, he reportedly threatened to use military force against protestors after the murder of George Floyd.
Now that Trump has purged top …

Is Trump About To Use The Insurrection Act? Here's Why Some People Believe So - Blavity

US supreme court hears arguments in case that tests Trump’s ability to fire officials
The Trump administration argues that the 90 year old precedent decision stopping president from removing officers must be overruled
Arguments in the case that will decide whether Donald Trump can fire officials from independent agencies have started.
First up is solicitor general D John Sauer, arguing on behalf of the Trump administration.
He kicks off his opening remarks by arguing …