My research covers the physics of space plasmas and its influence on human activity and technology - known as space weather. Over the past two decades I've developed a coherent research programme linking fundamental space plasma physics, global modelling and forecasting, and space instrumentation and missions. Much of my citation impact arises from work on collisionless magnetic reconnection, while my space‑weather and instrumentation activities deliver operational capabilities and policy‑relevant impact in the context of the rapidly expanding use of space. Together, these strands support the broader goals of the School of Convergence Science in developing convergent science, engineering and policy approaches to space safety, resilience and the sustainable use of space.

1. Fundamental space plasma physics: magnetic reconnection

I currently use spacecraft observations from missions such as Magnetospheric Multiscale (MMS), Solar Orbiter and Parker Solar Probe to investigate collisionless magnetic reconnection and related processes such as plasma turbulence and energy dissipation. My research trajectory in fundamental space plasma physics began with early work on shock and foreshock physics and has diversified into magnetic reconnection studies through working with a variety of international space missions including Cluster, THEMIS, MMS, Solar Orbiter and Parker Solar Probe. Reconnection changes the magnetic topology of space plasmas and repartitions energy between fields and particles, making it central to space weather. I have published extensively on the problems of reconnection at ion and electron scales in space plasmas, its role in mediating turbulent energy transfer, and its control of coupling between the solar wind, magnetosphere and ionosphere. This work has helped shape the scientific agenda for missions such as MMS and Solar Orbiter and underpins current models of energy conversion in the heliosphere. In the future I look forward to HelioSwarm as a member of the Science Working Group, and JUICE, as a Co-I of the J-MAG instrument.

2. Space weather: from physics to forecasting and risk

Building on this physical understanding, I develop global magnetospheric MHD simulations and tools for operational space‑weather forecasting and risk assessment. I lead the development of the GorgonOps magnetospheric model, a physics‑based MHD code that runs faster than real time and forecasts geomagnetic field variations over the UK. GorgonOps provides inputs to operational tools that estimate geomagnetically induced currents (GICs) in the high‑voltage power network, supporting assessments of space‑weather impacts on power grids and other infrastructure.

I led the implementation of GorgonOps at the UK Met Office as part of the SWIMMR SAGE (SWIMMR Activities in Ground Effects) consortium. The system was completed in 2024 and tested during the May 2024 space‑weather events, and will contribute to the Met Office’s long‑term space‑weather forecasting capability. I also work with the European Space Agency (ESA) and partners to integrate physics‑based models into operational space‑weather services. These projects link discovery science directly to resilience planning and national risk management.

Through my membership of the UK Space Environment Impacts Expert Group (SEIEG) I help translate advances in space‑weather science and modelling into independent advice to UK Government on risks to critical infrastructure. As Deputy Chair and then Chair of STFC’s Solar System Advisory Panel, I led the development of the 2022 Solar System Roadmap and associated submission of evidence to Parliament, articulating national priorities for solar‑system and space‑weather research. As Director of the Space Lab Network of Excellence, I led policy studies on UK space safety policy, mega‑constellations and environmental sustainability.

3. Space instrumentation and missions for real‑time monitoring

To support both discovery and applications, I develop magnetometer instrumentation and lead contributions to space missions that provide real‑time measurements of the space environment. I lead Imperial’s contribution to Vigil, the flagship Space Safety Programme mission of ESA and the first dedicated operational space‑weather mission in deep space at the Sun-Earth L5 Lagrange point. Imperial will deliver a magnetometer as one of six instruments providing real‑time public space‑weather monitoring data. Vigil will be a catalyst for a high‑profile, decade‑long programme of space‑weather science, placing Imperial at the forefront of international space‑weather efforts. 

Over the past decade I have led the MAGnetometer from Imperial College (MAGIC) programme, a family of miniaturised magnetometers based on magnetoresistive solid‑state sensors and roughly an order of magnitude smaller in power, mass and volume than traditional instruments. Following successful delivery of MAGIC on RadCube (operational 2021-2024) and on the ERSA suite for NASA’s Lunar Gateway, the next generation is now being built for HENON. HENON is an Italian-led ESA deep‑space technology‑demonstration CubeSat that will launch with Plato in 2027. MAGIC will monitor the solar wind magnetic field at roughly ten times the distance of current upstream space‑weather monitors, potentially extending forecast lead times by an order of magnitude for agencies such as the Met Office.

Future directions

Over the next decade my aim is to deepen and further connect these three strands of activity. In fundamental space plasma physics, I will continue to use multi‑point observations and theory to clarify how reconnection and turbulence govern energy conversion across the heliosphere, looking ahead to the arrival of the JUICE mission at Jupiter and Ganymede and the launch of the HelioSwarm mission to study space plasma turbulence. In space weather, I'm planning to extend our modeling capabilities to provide new forecasting for emerging space weather risks, in close partnership with operational agencies. In instrumentation, the MAGIC flight programme continues to expand, and I'm working to advance new sensing technologies. Taken together, these efforts are designed to drive the development of scientific, modelling and measurement capabilities that support the operational space‑weather services and governance frameworks required for the resilient and sustainable future use of space.

Selected publications

1. Fundamental space plasma physics

Burch et al. (2016), Science, “Electron‑scale measurements of magnetic reconnection in space.”
Landmark MMS result resolving the electron diffusion region in situ; defined the modern picture of collisionless magnetic reconnection and energy conversion at electron scales.

Phan et al. (2018), Nature, “Electron magnetic reconnection without ion coupling in Earth’s turbulent magnetosheath.”
Demonstrated a regime of electron‑only reconnection in the turbulent magnetosheath, reshaping our understanding of reconnection in weakly magnetised, turbulent plasmas.

Eastwood et al. (2010), JGR, “Average properties of the magnetic reconnection ion diffusion region in the Earth’s magnetotail: The 2001–2005 Cluster observations and comparison with simulations.”
Provided a definitive statistical characterisation of ion diffusion regions in the magnetotail, linking Cluster observations with kinetic simulations and constraining reconnection models.

Eastwood et al. (2013), Phys. Rev. Lett., “Energy partition in magnetic reconnection in Earth’s magnetotail.”
Quantified how energy released by reconnection is partitioned between particles and fields, establishing observational benchmarks for reconnection energetics.

Eastwood et al. (2009), Phys. Rev. Lett., “Observations of turbulence generated by magnetic reconnection.”
Showed directly that reconnection can drive turbulence, helping to connect reconnection physics to broader turbulent energy cascades in space plasmas.

Eastwood et al. (2005), Space Sci. Rev., “The foreshock.”
Review of Cluster results synthesising the physics of the terrestrial foreshock; now a standard reference on foreshock structure, transients and their role in solar‑wind–magnetosphere coupling.

2. Space weather

Eastwood et al. (2017), Risk Analysis, “The economic impact of space weather: Where do we stand?”
Pioneering quantitative synthesis of the economic and societal impacts of space weather, widely cited in policy and industry discussions and underpinning risk‑based approaches to space‑weather resilience.

Opgenoorth et al. (2024), Adv. Space Res., “Earth’s geomagnetic environment—progress and gaps in understanding, prediction, and impacts.”
Comprehensive community review of the chain from solar wind driving to geomagnetic impacts and GICs, framing the research agenda for space‑weather prediction and risk mitigation.

Beggan et al. (2025), Space Weather, “Implementing an operational cloud‑based now‑ and forecasting system for space‑weather ground effects in the UK.”
Describes the operational deployment and testing of a physics‑based now‑/forecasting system for geomagnetic disturbances and GICs in the UK, including Met Office implementation of GorgonOps and its use during real events.

3. Space instrumentation 

Eastwood et al. (2024), Space Weather, “The Vigil magnetometer for operational space weather services from the Sun–Earth L5 point.”
Defines the design and role of the Vigil magnetometer in ESA’s flagship space safety mission, including how magnetic field measurements will support real‑time space‑weather monitoring and services.

Eastwood et al. (2025), Space Sci. Rev., “In‑flight performance of the MAGIC magnetoresistive magnetometer on the RadCube CubeSat.”
Demonstrates the in‑orbit performance of the MAGIC miniaturised magnetometer, validating a new generation of small, resource‑efficient instruments for space‑weather monitoring and heliophysics.