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Earlier sources: Spacecraft
This space thread follows spacecraft through original research, public projects, and source reports. Read the evidence below to see which developments are represented in SYMTRI’s archive.
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 ↗7 classified signals in the fourteen-day window. 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
Crew-13 Rocket and Spacecraft at Launch Pad ↗
SpaceX Ahead of NASA’s SpaceX Crew-13 mission launch, a SpaceX Falcon 9 rocket and Dragon spacecraft are vertical at the launch pad of Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida in this Sept. 27, 2026, photo. NASA astronauts Jessica Watkins and Luke Delaney, CSA (Canadian Space Agency) astronaut Joshua Kutryk, and Roscosmos cosmonaut Sergey Teteryatnikov are scheduled to launch to the International Space Station for a long-duration science mission on Oct. 1. Image credit: SpaceX
- Hacker News · Posted on Hacker News · First archived
Generative AI Gives Spacecraft the Autonomy Engineers Once Feared ↗
Hacker News discussion.
- arXiv · Published · First archived
P2D - A Two-Dimensional Multi-Spacecraft Solar Wind Persistence Model ↗
The background solar wind is a key component in space weather forecasting, as it contains geoeffective high-speed streams and provides the medium through which coronal mass ejections propagate and evolve in interplanetary space. Due to the solar rotation and the slow evolution of large-scale solar wind structures, solar wind properties exhibit an autocorrelation with a period of roughly 27 days, particularly at solar minimum. We made use of this property to develop a solar wind persistence model with input from multiple spacecraft (Solar Orbiter, Parker Solar Probe, STEREO-A, STEREO-B and the…
- OpenAlex · Published · First archived
Two Approaches to Autonomous Spacecraft Inspection: Shielded Reinforcement Learning versus Probabilistic Roadmaps ↗
Abstract The close-proximity inspection of objects in low Earth orbit (LEO) is important to operations such as rendezvous, debris removal, servicing, and resident space object (RSO) characterization, all of which are of increasing interest to commercial and government organizations. Complex relative motion dynamics in eccentric LEO make the problem of path planning for autonomous inspection challenging. Agents must be able to fully inspect an object subject to illumination constraints while avoiding collision with the RSO. In this work, two approaches to the problem are developed and compared:…
- OpenAlex · Published · First archived
Orbit Determination of Cislunar Spacecraft Using Inter-Satellite Link Measurements with an Earth-Orbiting Satellite Constellation ↗
With the increasing number of lunar missions, utilizing satellites in special orbits in the cislunar space as relay satellites to provide communication relay and navigation services for spacecraft near the Moon has become a hot topic. DRO (Distant Retrograde Orbit) and NRHO (Near-Rectilinear Halo Orbit) are widely used in lunar and deep space exploration missions, offering unique orbital advantages. With the development of a global constellation of LEO satellites, this paper utilizes intersatellite link measurements between LEO satellites and cislunar probes to determine orbital parameters. Un…
- OpenAlex · Published · First archived
Coupled dynamics of variable-mass multi-tank liquid-filled spacecraft with a flexible appendage ↗
Abstract During on-orbit operations, liquid propellant is continuously consumed in spacecraft systems. To more accurately investigate rigid–liquid–flexible coupled dynamic behavior during spacecraft maneuvers, this paper accounts for the time-varying system parameters induced by propellant consumption and conducts coupled dynamic modeling, numerical simulation, and characteristic analysis of a variable-mass, multi-tank, liquid-filled spacecraft with flexible appendages under large-amplitude liquid sloshing conditions. First, the variable-parameter center-of-mass surface constraint model is ado…
- OpenAlex · Published · First archived
Numerical Assessment of the Laser Shock Analogy for Hypervelocity Impacts on Composite and Hybrid Spacecraft Shielding ↗
This study numerically investigates the analogy between laser shock (LS) and projectile-based hypervelocity impact (HVI) for composite and hybrid spacecraft shielding materials and proposes a methodology for determining the LS parameters corresponding to a given HVI event. Numerical HVI models were developed in LS-DYNA and validated against published experimental data for two shielding configurations: (a) a CFRP bumper and (b) an Al/CFRP/Al/CFRP/Al hybrid shield, with emphasis on crater formation and damage morphology. An LS model was subsequently calibrated through iterative adjustment of the…
- OpenAlex · Published · First archived
Simulation of Perturbed Motion of a Very Low Earth Orbit Spacecraft with a Corrective Variable-Magnitude Thrust Electric Propulsion System ↗
This paper presents an approach to modeling the perturbed motion of a low-orbit spacecraft equipped with a corrective electric propulsion system operating in adaptive thrust control modes. The approach is based on a specified criterion for maintaining an ultra-low orbit while taking into account the existing operational time constraints. The proposed mathematical models are intended for numerical calculations and can be applied in design analysis tasks, particularly when the mass–dimensional and energy characteristics of an ultra-low-orbit spacecraft and its electric propulsion system are to b…
Live window recorded . This is the ingestion observation time, not the publication or discovery date of each source.
How to assess evidence about Spacecraft
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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