the United States’s
space tech industry,
in focus.

Spacecraft design and propulsion challenges

27.6% of this theme group

Researchers highlight aging hardware, system integration limits, and propulsion inefficiencies affecting mission reliability.

Spacecraft (229) · Aerospace engineering (93) · Systems engineering (34) · Propulsion (22)

Molecular Muscle Experiment: Hardware and Operational Lessons for Future Astrobiology Space Experiments

Spacecraft obsolescence: Modeling, value analysis, and implications for design and acquisition

On‑orbit servicing and constellation dynamics

20.2% of this theme group

Papers point to technical hurdles in servicing satellites and reconfiguring large constellations safely.

Spacecraft (126) · Asteroid (21) · Satellite (33) · Constellation (20)

On-orbit servicing

Uniform Satellite Constellation Reconfiguration

Space system cyber‑physical and policy issues

14.2% of this theme group

Studies flag vulnerabilities in cyber‑physical interfaces and gaps in space‑weather policy frameworks.

Space (112) · Space technology (38) · Space exploration (42) · Space industry (18)

Cyber-Physical Challenges for Space Systems

SPACE WEATHER POLICY AND EFFECTS

Mars radiation and biology risks

13.3% of this theme group

Works emphasize uncertainties in radiation exposure and biological experiment constraints for crewed Mars missions.

Mars Exploration Program (74) · NASA Deep Space Network (55) · Exploration of Mars (21) · Space exploration (49)

Review of NASA Approach to Space Radiation Risk Assessments for Mars Exploration

Space Biology Research and Biosensor Technologies: Past, Present, and Future

Jovian magnetosphere and atmospheric transport

12.9% of this theme group

Authors discuss limited understanding of mass, energy flow and temperature variability around Jupiter.

Jupiter (42) · Solar wind (24) · Jovian (17) · Magnetosphere (20)

1. Transport of Mass, Momentum and Energy in Planetary Magnetodisc Regions

Spatiotemporal Variations of Temperature in Jupiter’s Upper Atmosphere

CubeSat development for deep‑space science

5.9% of this theme group

Research reveals design, communication, and operational obstacles when extending CubeSat capabilities beyond low Earth orbit.

CubeSat (54) · Satellite (15) · Aerospace engineering (16) · Aeronautics (9)

CubeSat flight system development for enabling deep space science

Designing the communication sub-system for nanosatellite CubeSat missions: Operational and implementation perspectives

Philosophical and epistemic limits in space research

5.9% of this theme group

Papers explore conceptual boundaries and ethical considerations shaping future space investigations.

New horizons (60) · Epistemology (7) · Philosophy (7) · Geology (9)

New horizons for human pathogenic autoantibodies.

Media ecology ethics: Dwelling on the horizons

Spacecraft charging and plasma interactions

19.9% of this theme group

Studies caution that surface charging and plasma wakes can reduce instrument performance and mission safety.

Spacecraft (102) · Aerospace engineering (34) · Spacecraft charging (14) · Plasma (9)

Retarding potential analyzer: Principles, designs, and space applications

Electrostatic Spacecraft Potential Structure and Wake Formation Effects for Characterization of Cold Ion Beams in the Earth's Magnetosphere

Debris mitigation and material degradation

18.6% of this theme group

Works warn about evolving debris environments and material erosion affecting long‑term spacecraft health.

Mars Exploration Program (26) · Spacecraft (69) · Space debris (16) · Aerospace engineering (32)

Dynamic Interplay Between Spacecraft Charging, Space Environment Interactions, and Evolving Materials

Modification of Space Debris Trajectories through Lasers: Dependence of Thermal and Impulse Coupling on Material and Surface Properties

Rendezvous safety and mission trade‑offs

16.9% of this theme group

Researchers advise careful balancing of efficiency, safety, and autonomy in docking and formation‑flight operations.

Rendezvous (18) · Spacecraft (47) · New horizons (8) · Aerospace engineering (21)

Daphne: A Virtual Assistant for Designing Earth Observation Distributed Spacecraft Missions

Optimal trade-off analysis for efficiency and safety in the spacecraft rendezvous and docking problem

Jovian radiation and astrobiology concerns

16.5% of this theme group

Papers highlight uncertainties in Jupiter’s radiation belts and their impact on habitability studies.

Jupiter (29) · Astrobiology (31) · Jovian (13) · Geophysics (8)

<i>VOYAGER 1</i> NEAR THE HELIOPAUSE

Analysis of Temporal and Structural Characteristics of Jovian Radio Emissions for Passive Radar Sounding of Jupiter’s Icy Moons

Remote‑sensing calibration and observational fidelity

14.6% of this theme group

Authors stress the need for precise calibration to avoid systematic errors in space‑based measurements.

Remote sensing (30) · Calibration (11) · Observatory (9) · Wavelength (5)

TESTING EUV/X-RAY ATOMIC DATA FOR THE<i>SOLAR DYNAMICS OBSERVATORY</i>

Improved Lunar Irradiance Model Using Multiyear MODIS Lunar Observations

CubeSat operational reliability and software deployment

7.0% of this theme group

Studies note risks associated with on‑orbit software updates and plasma‑induced measurement errors.

CubeSat (40) · Constellation (6) · Satellite (7) · Software deployment (4)

CubeSat measurements of thermospheric plasma: spacecraft charging effects on a plasma analyzer

On-orbit operations summary for the Deformable Mirror Demonstration Mission (DeMi) CubeSat

Solar eruptions and heliospheric impact

6.5% of this theme group

Research cautions that coronal mass ejections and solar wind variability can disrupt spacecraft trajectories.

Coronal mass ejection (24) · Solar wind (18) · Spacecraft (27) · Heliosphere (8)

The Solar Energetic Particle Event of 2010 August 14: Connectivity with the Solar Source Inferred from Multiple Spacecraft Observations and

COMBINED MULTIPOINT REMOTE AND IN SITU OBSERVATIONS OF THE ASYMMETRIC EVOLUTION OF A FAST SOLAR CORONAL MASS EJECTION

Advanced propulsion staging and deep‑space launch

23.6% of this theme group

Works propose modular propulsion architectures and secondary mission-equipment options to expand exploration capabilities.

Spacecraft (888) · Aerospace engineering (511) · Space exploration (173) · Mars Exploration Program (186)

Analytical Framework for Staging of Space Propulsion Systems

Enabling Science and Deep Space Exploration Through Space Launch System Secondary Payload Opportunities

Coordinated remote sensing and inter‑satellite navigation

20.7% of this theme group

Papers present methods for joint observation scheduling and precise orbit determination using multiple spacecraft.

Remote sensing (236) · Spacecraft (577) · New horizons (73) · Satellite (159)

Scheduling observations of celestial objects for Earth observing sensor calibration

Orbit Determination Using Line-of-Sight and Range Measurements Between Multiple Spacecraft

Solar wind modeling and magnetopause science

16.0% of this theme group

Studies develop predictive models and in‑situ measurements to improve understanding of solar‑driven space weather.

Solar wind (150) · Spacecraft (577) · Coronal mass ejection (76) · Heliosphere (57)

Linear Models for Spacecraft Relative Motion Perturbed by Solar Radiation Pressure

<i>In situ</i> spacecraft observations of a structured electron diffusion region during magnetopause reconnection

CubeSat mission-equipment integration for multi‑mission roles

15.3% of this theme group

Research showcases versatile CubeSat platforms supporting sensing, communication, and distributed telescope concepts.

CubeSat (884) · Remote sensing (155) · Payload (128) · Aerospace engineering (212)

NASA SpaceCube Intelligent Multi-Purpose System for Enabling Remote Sensing, Communication, and Navigation in Mission Architectures

Systems Architecture and Conceptual Design of a CubeSat Formation Serving as a Distributed Telescope

Robust attitude and trajectory control techniques

12.9% of this theme group

Works introduce adaptive, fault‑tolerant, and optimal control strategies for precise spacecraft maneuvering.

Control theory (363) · Spacecraft (644) · Attitude control (100) · Trajectory (133)

Indirect Robust Adaptive Fault -Tolerant Control for Attitude Tracking of Spacecraft

Integrated nonlinear optimal control of spacecraft in proximity operations

Model predictive control for rendezvous operations

5.8% of this theme group

Papers demonstrate predictive algorithms that handle constraints and improve autonomy during docking maneuvers.

Rendezvous (340) · Cognitive radio (32) · Computer network (34) · Control theory (69)

Model Predictive Control for Spacecraft Rendezvous and Docking: Strategies for Handling Constraints and Case Studies

Autonomous Satellite Rendezvous and Proximity Operations with Time-Constrained Sub-Optimal Model Predictive Control

Jovian high‑energy environment modeling

5.6% of this theme group

Studies provide empirical models of electron populations and ionospheric conditions around Jupiter.

Jupiter (254) · Jovian (106) · Astronomy (79) · Magnetosphere (73)

An empirical model of the high‐energy electron environment at Jupiter

Jovian High‐Latitude Ionospheric Ions: Juno In Situ Observations

San Francisco

23.6% across the displayed hubs

5 companies hiring · $3.5B disclosed funding

New York City

13.5% across the displayed hubs

1 companies hiring · $98.8M disclosed funding

Seattle

13.5% across the displayed hubs

3 companies hiring · $633.5M disclosed funding

Los Angeles

12.4% across the displayed hubs

4 companies hiring · $639.2M disclosed funding

Denver

10.1% across the displayed hubs

1 companies hiring · $24.0M disclosed funding

Houston

10.1% across the displayed hubs

1 companies hiring · $834.5M disclosed funding

Mountain View

9.0% across the displayed hubs

0 companies hiring · $179.6M disclosed funding

Palo Alto

7.9% across the displayed hubs

2 companies hiring · $264.5M disclosed funding