THE INTERNET IS THINKING
Earlier sources: Space
Space research and engineering study the universe and build the systems used to reach and observe it. Follow astronomy, spacecraft, launch systems, satellites, exploration, and Earth observation.
SYMTRI organizes observations from public sources into a living map. Connections reflect shared subject matter; they do not establish causation or endorse a source.
Open in the map ↗537 classified signals in the fourteen-day window. Recent momentum: steady. These counts include signals awaiting readable evidence.
Earlier sources
Up to ten sources with readable evidence, ordered by their feed timestamp. These archive sources can be older than the live fourteen-day window. This list is a sample, not a measure of total activity. Dates distinguish paper publication, repository creation, model/dataset activity, Hacker News posts, and KEV catalog additions. “First archived” records when SYMTRI first stored the signal.
- NASA · Source date · First archived
A Journey to the Depths of Ancient Mars? ↗
Explore This Section Perseverance Home Mission Overview Rover Components Mars Rock Samples Where is Perseverance? Ingenuity Mars Helicopter Mission Updates Science Overview Objectives Instruments Highlights Exploration Goals News and Features Multimedia Perseverance Raw Images Images Videos Audio More Resources Mars Missions Mars Perseverance Rover Mars Curiosity Rover Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions Mars Home NASA’s Perseverance rover acquired this image of some light-toned boulders scattered across a hillside of a region called “Lac de Charmes,” beyond the western…
- arXiv · Published · First archived
Satellite observations of nitrous oxide emissions from adipic acid production ↗
The production of adipic acid generates nitrous oxide as a by-product, which, if emitted, very effectively warms the climate and depletes the stratospheric ozone layer. There exists cost-effective technology to mitigate these nitrous oxide emissions from adipic acid production, but the degree of implementation of this technology, most notably at sites in China, is uncertain. Using satellite observations from summer 2026, we quantify nitrous oxide emissions from three adipic acid production sites in China, finding emissions that total over half a million tonnes per year, a rate that implies lim…
- OpenAlex · Published · First archived
Effects of pool diameter and oxygen concentration on combustion and heat-feedback characteristics of rocket-kerosene pool fires ↗
Parallel loading of liquid oxygen and rocket kerosene can produce simultaneous leaks and oxygen-enriched atmospheres at launch sites, intensifying liquid-fuel pool-fire hazards. In this study, rocket-kerosene pool fires were experimentally investigated in a vertical low-velocity wind tunnel at oxygen concentrations of 21–100% and pool diameters of 1–5 cm. The mass-loss rate, flame morphology, pulsation frequency, plume axis temperature, and radiative heat flux were measured to clarify the effects of oxygen concentration and pool diameter on combustion enhancement and heat-feedback transition.…
- OpenAlex · Published · First archived
Protocol for Cas9 nickase-mediated induction and two-dimensional gel detection of i-loops at human telomeric and alpha satellite repeats ↗
Single-stranded DNA breaks (SSBs) at repetitive elements promote internal loops (i-loops), precursors of extrachromosomal circular DNA (eccDNA). Here, we present a protocol for inducing targeted breaks at human telomeric or alpha-satellite repeats using doxycycline-inducible Cas9 nickase variants and repeat-specific sgRNAs. We describe steps for verifying strand-specific nicking by alkaline-gel Southern blotting and detecting i-loop accumulation by two-dimensional agarose gel electrophoresis (2D gel). In this protocol, DNase I treatment of isolated nuclei is employed as a Cas9-independent cont…
- OpenAlex · Published · First archived
When Freight Activity Falls: Asymmetric Warehouse Rent Adjustment and Implications for Sustainable Logistics Space Planning in China, 2018–2025 ↗
Durable logistics space commitments create a sustainability problem when capacity and freight demand diverge. We examine whether freight direction contains distinct information for warehouse market monitoring in China. Licensed CSMAR port and warehouse records yield 978 complete city-month observations across 15 continuity-qualified cities during November 2018–December 2025; a fixed 24-city set provides an extension. City and year-month fixed-effects models estimate cumulative associations over lags 0–3, with small-cluster and dependence-robust inference. Average rent and vacancy associations…
- OpenAlex · Published · First archived
A sustainable platform for federated health data access, AI innovation, and regulatory acceptance in alignment with the European Health Data Space principles ↗
The IDERHA ( I ntegration of Heterogeneous D ata and E vidence towards R egulatory and H TA A cceptance) project aims to enhance medical research by establishing one of Europe’s first pan-European, disease-agnostic health data spaces. Aligned with the European Health Data Space (EHDS) principles, IDERHA addresses critical challenges in data quality, standardization, and governance, ensuring compliance with GDPR, the AI Act, and emerging EHDS regulations. Its ambition is to enable secure, federated access and analysis of health data, fostering data-driven collaboration and innovation in healthc…
- OpenAlex · Published · First archived
Direct Determination of a Non-Cooperative LEO Satellite’s Orbital State from Ground-Station Signals: A Cramér–Rao Analysis ↗
This paper considers passive determination of the orbital state of a non-cooperative low-Earth-orbit satellite from radio signals received at several ground stations. Reversing the roles of direct geolocation in which a satellite with known ephemeris locates a ground emitter, the satellite’s six-dimensional epoch state is estimated in a single step from the received data. Because the trajectory is a deterministic function of this state, every candidate is a valid orbit. The Cramér–Rao bound is derived; it factors into signal, geometry and orbital-dynamics terms, and a closed-form Keplerian sta…
- OpenAlex · Published · First archived
Household selection in the absence of a sampling frame in community-based surveys – comparing satellite image-based approaches for a survey on snakebite envenoming in rural Malawi ↗
Abstract Background Household-level survey data are essential for assessing population health, but creating sampling frames remains challenging in rural areas without administrative data. In preparation for a large community-based snakebite survey, we compared satellite-based methods for generating household sampling frames in such settings. Methods In June 2023, we selected and classified six areas in Neno and Mwanza districts, Malawi, to create sampling frames using three approaches: manual building identification from satellite images, building extraction from OpenStreetMap and artificial i…
- OpenAlex · Published · First archived
Honeybee comb geometry emerges from local redistribution of angular space by worker construction activity ↗
Abstract Honeybee comb is unique among animal architectures in its strikingly regular hexagonal cells, yet how this geometry emerges remains debated. Do bees construct perfect hexagons from the outset, or does regularity arise through later adjustments? We examined comb-building dynamics by presenting honeybees ( Apis mellifera ) with wax stimuli that constrained cell placement and angular space. Across three experiments, we tested predictions about how bees distribute the available angular range at cell junctions, shape cell bases, and correct irregularities over time. Initially, cells were u…
- NASA · Source date · First archived
NASA to Stream SpaceX Crew-12 Return, Splashdown Live ↗
NASA’s SpaceX Crew-12 members gather for a portrait in the pressure suits they will wear when they depart the International Space Station inside the SpaceX Dragon spacecraft. From left, Roscosmos cosmonaut and mission specialist Andrey Fedyaev, NASA astronauts Jack Hathaway and Jessica Meir, Crew-12 pilot and commander respectively, and ESA (European Space Agency) astronaut and mission specialist Sophie Adenot. Credit: NASA/Anil Menon NASA and SpaceX are targeting no earlier than 8:05 a.m. EDT, Wednesday, Oct. 7, for the undocking of the agency’s SpaceX Crew-12 mission from the International S…
Live window recorded . This is the ingestion observation time, not the publication or discovery date of each source.
How to assess evidence about Space
Check each original source for its methods, release status, limitations, and supporting data. A repository announcement, a preprint, and a published study provide different kinds of evidence. SYMTRI’s subject classification helps discovery; it does not independently validate the source’s claims.
See the collection and counting methodology ↗ · Read the weekly synthesis ↗
Follow a thread
Explore related regions
These navigation suggestions are part of the map’s editorial structure, rather than measured evidence of a connection.