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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 ↗519 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.
- OpenAlex · Published · First archived
Toward a future space-based, highly scalable AI infrastructure system design ↗
The sun is the largest energy source in our solar system, and thus it warrants consideration how future AI infrastructure could most efficiently tap into that power. We explore a scalable compute system for machine learning (ML) in space: fleets of satellites equipped with solar arrays, free-space optics inter-satellite links, and Google tensor processing unit (TPU) accelerator chips. To facilitate high-bandwidth, low-latency inter-satellite communication, the satellites would be flown in close proximity. We illustrate the basic approach to formation flight via an 81-satellite cluster of 1 km…
- OpenAlex · Published · First archived
A Loop-Space Embedded Optimization Framework for Energy-Efficient Underground Mine Ventilation Networks ↗
Underground mine ventilation is a safety-critical engineering system and one of the largest electricity consumers in mining, typically accounting for 40–60% of a mine’s electrical demand. Allocating airflow economically without violating safety limits is therefore central to energy-efficient ventilation regulation. This study proposes an optimization framework that couples loop-space embedding with a sine–cosine and Cauchy mutation-enhanced sparrow search algorithm (SCSSA). Loop-space embedding reparameterizes the branch airflow vector on the null space of the network incidence matrix, so that…
- OpenAlex · Published · First archived
Everyday Practices and Urban–Architectural Supports in Public Space: An Observational Case Study with Visual–Architectural Analysis in Saraguro, Ecuador ↗
Public space in Andean urban centers emerges through interactions among built form, temporal rhythms, and everyday practices. This study characterizes temporal variation in observed use intensity and estimated dwell time, describes primary actions and urban–architectural supports, and examines recurrent action–support relationships in central Saraguro, Ecuador. This observational, descriptive case study with visual–architectural analysis comprised 36 one-hour sessions over 12 fieldwork days from September 2025 to March 2026. Approximately 200 photographs formed the visual corpus; 20 candidate…
- OpenAlex · Published · First archived
Evaluation of Insect Frass, Few-Layer Graphene and Their Combination on Seed Germination and Early Seedling Growth of Rocket ↗
The growing demand for sustainable agricultural practices has increased interest in bio-based fertilizers and nano-enabled materials for plant development. This study investigated the responses of rocket (Eruca sativa) to Frass Suspension (30 min), Frass Suspension (overnight), Few-Layer Graphene (FLG), and a combined Frass/FLG formulation at different application levels. Germination percentage and primary root length were evaluated in two independent experiments, followed by a descriptive post-transplantation assessment. Germination responses varied among treatments, application levels, and e…
- OpenAlex · Published · First archived
A Design Space Exploration of Async/Await ↗
Many modern programming languages include some form of asynchronous programming. In particular, a growing number now have what we call straight-line asynchrony: attempts to provide asynchronous functions that look similar to synchronous functions, thereby enabling asynchrony without introducing complex control. These languages often share construct names like “async” and “await,” which suggests that they have deep semantic similarities. Yet, a close examination reveals that these languages are quite different along several dimensions, often subtly. These differences have real semantic conseque…
- NASA · Source date · First archived
Curiosity Blog, Sols 5016–5021: Fantastic Minerals and How To Detect Them ↗
Curiosity Navigation Curiosity Home Mission Overview Where is Curiosity? Mission Updates Science Overview Instruments Highlights Exploration Goals News and Features Multimedia Curiosity Raw Images Images Videos Audio Mosaics More Resources Mars Missions Mars Perseverance Rover Mars Curiosity Rover Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions Mars Home 3 min read Curiosity Blog, Sols 5016–5021: Fantastic Minerals and How To Detect Them NASA’s Mars rover Curiosity generated this close-up image of a brushed spot on bedrock (informally named “Salar de Vacas”), showing a jumble of ro…
- arXiv · Published · First archived
Correlations between the Carbon-to-Oxygen Ratio and the Orbital and Physical Properties of Exoplanets ↗
Studies suggest that protoplanetary disks around stars with high carbon-to-oxygen (C/O) ratios can produce terrestrial planets with carbon-dominated compositions instead of silicon-dominated ones. While previous work studied the evolution of these disks and the planets that form within them, none analyze in detail how the differences in the surface density profiles of these disks could affect the architectures and iron and siderophile contents of exoplanetary systems. Here, we present a new study that uses the N-body integrator REBOUND and data from a sequential dust condensation model to simu…
- Hacker News · Posted on Hacker News · First archived
The top secret URSALA, RAQUEL, and FARRAH satellites (2025) ↗
Hacker News discussion.
- Hacker News · Posted on Hacker News · First archived
A Cold War Spy Satellite Named After Farrah Fawcett Just Blew Apart in Orbit ↗
Hacker News discussion.
- NASA · Source date · First archived
Help Overlap Zoo Reveal Cosmic Dust ↗
Explore This Section Science Citizen Science Help Overlap Zoo Reveal Cosmic… Overview Resources Opportunities Citizen Science Highlights About Science Activation Galaxies, vast collections of billions of stars, gas, and dust held together by gravity, are scattered across the immensity of space. But every so often, a coincidence occurs: Two galaxies line up from our point of view on Earth (or from a space telescope) and appear to overlap in the sky. These rare overlapping galaxies give astronomers a chance to study something normally difficult to see: the dust inside one of these distant cosmic…
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.
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