NASA Artemis II launch raises GPS disruption and space insurance risks
NASA’s Artemis II mission generated unusually powerful disturbances in Earth’s upper atmosphere during its April 2026 launch, potentially affecting GPS positioning accuracy and raising questions about the insurance implications of increasingly powerful space missions.
Researchers from National Cheng Kung University in Taiwan analyzed satellite navigation signals collected by ground-based monitoring stations and identified substantial changes in the ionosphere following the launch of NASA’s Space Launch System (SLS) rocket.
- NASA’s Artemis II launch on April 1, 2026, generated ionospheric disturbances extending approximately 5,000 kilometers across North America.
- Researchers identified atmospheric changes that could translate into GPS positioning errors of several meters, potentially affecting autonomous vehicles and drones.
- The findings raise questions about third-party liability and insurance coverage for space launches, although no confirmed GPS-related damage claims have been reported.
The disturbances were significantly stronger than those documented during previous rocket launches, with some measurements indicating effects up to ten times more intense than those observed during SpaceX Starship tests.
Scientists warned that changes in ionospheric electron density could temporarily reduce positioning accuracy, potentially affecting technologies that depend on precise satellite navigation.
The findings also highlight an emerging consideration for the space insurance market: whether launch-related atmospheric effects could generate liabilities extending beyond conventional risks such as rocket failures, falling debris and damage to launch infrastructure.
However, the study did not establish that Artemis II caused actual GPS service failures, vehicle accidents or insured losses, according to Space.
Artemis II launch created atmospheric disturbances spanning 5,000 kilometers
NASA launched Artemis II from Kennedy Space Center in Florida on April 1, 2026, sending four astronauts on a mission around the Moon. The flight marked the first crewed journey into lunar space in more than five decades.
Researchers used high-precision ground-based GPS monitoring networks to measure changes in total electron content, an indicator of the concentration of electrically charged particles along satellite signal paths.
The measurements revealed several major ionospheric disturbances associated with the rocket’s ascent and subsequent propulsion activity.
Two extended regions of reduced electron density reached approximately 5,000 kilometers across North America.
These regions, commonly described as ionospheric holes, were not physical openings in Earth’s atmosphere. They were temporary areas where the concentration of charged particles had fallen.
The disturbances were associated with the rocket’s movement through the atmosphere and engine activity at high altitudes.
GPS positioning errors could reach several meters
The ionosphere plays an important role in satellite navigation because GPS signals must travel through it before reaching receivers on Earth.
Changes in electron density affect how radio signals propagate, potentially introducing errors into the distance calculations used to determine a receiver’s location.
The researchers identified disturbances corresponding to potential positioning errors of several meters.
Such deviations can be significant for applications requiring high-precision navigation, particularly autonomous vehicles, drones and other automated systems.
Charles Lin, an earth science professor at National Cheng Kung University and a co-author of the research, highlighted the potential consequences for technologies that depend on accurate positioning.
A deviation of only a few meters could place a vehicle’s calculated position in the wrong traffic lane or interfere with unmanned aircraft navigation.
However, the study examined atmospheric measurements and their implications for GPS accuracy. It did not demonstrate that autonomous vehicles changed lanes or that drones experienced navigation failures during the launch.
Real-world positioning performance also depends on receiver technology, correction systems and additional navigation sensors.
NASA Artemis missions and space launch insurance
The findings introduce a potential liability consideration for NASA’s Artemis programme and the broader space insurance industry.
Space launch insurance generally addresses several categories of financial exposure, including damage to launch vehicles and spacecraft, losses affecting launch facilities, and liability for injury or property damage suffered by third parties.
However, insurance arrangements differ between government missions and commercially operated launches.
Under established US government policy, federal agencies generally retain financial responsibility for losses involving their own property rather than routinely purchasing commercial insurance.
NASA also uses contractual liability provisions and cross-waivers to allocate certain risks among participating organizations and contractors. Space insurance is roughly divided into four types of coverage. They reflect the phases of most satellite projects – preparing and launching the satellite.
The Federal Aviation Administration (FAA) applies separate financial responsibility requirements to licensed commercial space launches.
Commercial operators must demonstrate sufficient financial resources to cover the maximum probable loss determined for their activities. They can meet this obligation through insurance, dedicated financial reserves or other permitted arrangements.
Government-operated launches conducted for government purposes, including certain NASA missions, are generally exempt from FAA commercial launch licensing requirements.
Consequently, commercial launch insurance requirements should not automatically be treated as the insurance arrangements governing Artemis II.
NASA also has statutory authority to provide liability insurance or indemnification under specified circumstances involving users of space vehicles.
The existence of that authority does not establish that a particular Artemis mission carries a specific commercial insurance policy.
Could GPS disruption generate third-party insurance claims?
The Artemis II findings raise a broader question about whether rocket-induced navigation disturbances could create third-party liability exposure.
Potential scenarios could include:
- Property damage associated with a demonstrable navigation failure.
- Damage involving drones or other equipment dependent on satellite positioning.
- Financial losses resulting from temporary disruption of precision navigation services.
- Liability disputes involving launch operators, contractors or affected third parties.
These are hypothetical exposures, not documented consequences of the Artemis II launch. Whether a claim would be covered depends on the circumstances, applicable liability law and insurance policy terms.
Conventional third-party liability insurance commonly focuses on bodily injury and property damage. Pure financial losses arising from inaccurate navigation data may be treated differently and are not necessarily covered.
An affected party would also need to establish that the alleged loss was caused by the launch-related disturbance. There is currently no confirmed evidence that the Artemis II ionospheric disturbances resulted in insured damage, liability claims or insurance payouts.
Nevertheless, the research could become relevant to future risk assessments as the frequency of powerful rocket launches increases.
Rocket disturbances exceeded those observed during earlier launches
Researchers reported that the ionospheric effects associated with Artemis II exceeded those observed during previous rocket launches.
Some disturbances were estimated to be up to ten times stronger than those recorded following SpaceX Starship tests. The difference is notable because Starship produces greater thrust at liftoff than NASA’s SLS rocket.
The findings suggest that the magnitude of ionospheric disturbances cannot be explained by launch thrust alone.
The altitude, timing and location of rocket engine activity can influence how exhaust gases and atmospheric pressure waves interact with charged particles.
Rocket exhaust can reduce local electron density through chemical reactions, while shock waves and atmospheric disturbances can redistribute particles across larger regions.
Unlike major solar storms, which can affect satellite navigation for prolonged periods, rocket-induced disturbances are generally temporary and concentrated around affected atmospheric regions.
More frequent space launches could change risk assessments
The increasing frequency of launches involving powerful rockets may create new challenges for atmospheric monitoring, navigation reliability and space-related risk management.
Satellite navigation supports aviation, maritime transportation, surveying, agriculture and automated systems.
Although GPS receivers can compensate for some ionospheric effects, large or rapidly changing disturbances may complicate high-precision positioning.
For insurers and reinsurers, the potential relevance lies in understanding whether launch activities can cause measurable damage beyond the immediate launch area.
Traditional launch liability assessments focus heavily on identifiable accident scenarios, including debris impacts and physical damage.
Atmospheric disturbances affecting navigation systems could represent a different category of exposure, particularly where financial or physical damage occurs some distance from a launch site.
However, the Artemis II research does not establish that such losses have occurred or that existing launch insurance models are inadequate.
The findings were reported in preliminary research associated with Geophysical Research Letters and require further scientific assessment.
Additional research will be needed to establish how these disturbances affect operational GPS receivers, how long positioning inaccuracies persist and whether monitoring systems can provide useful advance warnings.
For NASA and the commercial space industry, the study highlights the importance of understanding the wider effects of rocket launches as space activity expands. For insurers, it identifies a potential area for future risk analysis rather than an established source of claims.