NASA’s Artemis II launch did more than send four astronauts around the Moon. According to a Space.com report, researchers found that the Space Launch System (SLS) rocket disturbed the ionosphere along a stretch of roughly 3,100 miles (5,000 kilometers) across North America, and ground-based GPS stations picked up changes equivalent to positioning errors of several meters. That is the Artemis II ionosphere GPS story in one sentence. The details matter more than the headline, so this analysis separates what the reports confirm from what they do not.
The mission lifted off on April 1, 2026 and splashed down on April 10. If you want the flight itself, our Artemis II mission recap covers the trajectory, the heat shield and the crew. This piece focuses on a quieter result: a rocket large enough to leave a measurable scar in the upper atmosphere, and the navigation hardware that noticed.
Several outlets ran the story, including Space.com and the Korean daily Chosun Ilbo. Some headlines said the launch “tore a hole” in the atmosphere and “disrupted GPS signals.” Those phrases overshoot the evidence. The reporting describes temporary ionospheric disturbances, regions where free electrons were depleted, and short-lived positioning errors detected at ground stations. It does not describe a permanent hole or a broad GPS outage. This article uses the cautious reading throughout.
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What the Artemis II Ionosphere Report Actually Says
Researchers studied how the Artemis II launch changed the ionosphere, the electrically charged layer of the upper atmosphere. Space.com places that layer at altitudes above 30 miles (50 kilometers). The team did not need a new instrument to see the effect. They used existing ground-based GPS stations and measured how long satellite signals took to reach them. When the number of free electrons along a signal path changes, the travel time changes with it. By tracking those shifts, the researchers reconstructed how the rocket’s passage altered electron concentrations.
The headline numbers are specific. The team reported two disturbances, one tied to the 212-foot (65-meter) SLS core stage and a second tied to two later upper-stage thruster burns. The affected zone stretched about 3,100 miles (5,000 kilometers) from east to west across North America. The upper-stage disturbance stood out as stronger than the core-stage one. At the ground stations, the electron changes were equivalent to positioning errors of several meters.
Space.com also reports that the effect was up to 10 times more intense than the disturbances seen after SpaceX Starship test launches. Space.com describes the Artemis II effect as larger than any caused by earlier rocket launches to date. That comparison drives much of the interest, because Space.com notes Starship has about twice the SLS liftoff thrust. We return to it in a dedicated section below.
Artemis II Mission Facts Behind the GPS Story
Before the atmosphere, the mission. NASA’s official mission page records Artemis II launching on April 1, 2026 and splashing down on April 10, 2026. The flight lasted about 10 days and carried the crew around the Moon. Four people flew: Reid Wiseman, Victor Glover, Christina Koch and Jeremy Hansen of the Canadian Space Agency. NASA’s own preparation coverage, such as its final steps update for the first crewed Artemis mission, shows how much attention the SLS stack received before liftoff.
The table below sorts every detail in this story by how well the available records support it. The left columns hold what we can state as fact. The bottom rows hold what we cannot.
| Item | Detail | Status |
|---|---|---|
| Launch and splashdown | April 1 and April 10, 2026, about 10 days | Confirmed (NASA mission page) |
| Crew | Wiseman, Glover, Koch, Hansen (CSA) | Confirmed |
| Core stage length | 212 feet (65 meters) | Confirmed |
| Number of disturbances | Two (core stage, upper-stage burns) | Confirmed (Space.com) |
| Disturbance extent | About 3,100 miles (5,000 km), east to west | Confirmed (Space.com) |
| GPS effect | Equivalent to errors of several meters | Confirmed (ground stations) |
| Versus Starship tests | Up to 10 times more intense | Confirmed (Space.com) |
| A literal “hole” in the atmosphere | Temporary electron-depleted regions only | Unconfirmed as worded |
| Broad GPS outage | Localized, temporary errors only | Unconfirmed |
| Users affected, error duration | No figures in available records | Unconfirmed |
How a Rocket Plume Disturbs GPS Signals
GPS works by timing. A satellite broadcasts a signal, a receiver notes when it arrives, and the gap converts to distance. Four or more satellites let the receiver solve for position. The system assumes it knows how fast the signal travels. Empty space is easy. The ionosphere is not, because free electrons slow the signal slightly and change its path delay. Normal receivers correct for an average ionosphere, and the best ones measure the delay directly.
A large rocket breaks that assumption. Exhaust gases injected at altitude can strip out free electrons or reshape the region around the vehicle’s path. Where electron concentrations drop, the delay shifts away from the model. A receiver that trusts the model reports a position that is a bit wrong. That is the mechanism the researchers describe, and it explains why the effect shows up in a time series: the ground station sees a clean signal, then a disturbance, then recovery.
Why Depleted Electrons Look Like a “Hole”
The “hole” language comes from the shape of the data. A map of electron content shows a dip where the plume passed, so scientists often call it an ionospheric hole. The term is jargon for a region with fewer free electrons than its surroundings. It does not mean missing air, and the surrounding plasma fills the gap again over time. Headlines that dropped that context turned a routine scientific term into a dramatic one.
Two Disturbances: Core Stage vs Upper-Stage Burns
The researchers split the signal into two events. The first tracks the SLS core stage, which is 212 feet (65 meters) long and does the heavy lifting through the lower atmosphere and into the thin air above it. The second tracks two later upper-stage thruster burns, which fire at higher altitude, closer to where the ionosphere actually sits.
The upper-stage disturbance was the more prominent of the two. That result fits the physics in a plain way. A core stage spends most of its burn in dense air where the ionosphere is far above. An upper stage burns inside or near the charged layer, so it dumps exhaust directly into the region that controls GPS delay. Thrust is lower than at liftoff, yet the placement is better for causing trouble.
For engineers, the split matters more than the total. It says the dangerous phase is not the loud, visible one. The quiet burns that follow, when the stack is already high and fast, leave the larger electronic footprint. Anyone planning for future crewed lunar flights, which will repeat this pattern, now has a measured example instead of a model.
A 3,100-Mile Footprint Across North America
The reported disturbance ran about 3,100 miles (5,000 kilometers) from east to west. For scale, that is roughly the width of the continental United States. The footprint matters because GPS errors scale with the area of altered ionosphere that signal paths cross. A small hole near the launch site would touch only nearby receivers. A continent-scale feature touches every receiver whose view of a satellite passes through it.
Rocket trajectories explain the long, narrow shape. A launch heading east from Florida climbs and curves, and the upper-stage burns stretch the trail along the flight path. The result looks less like a round crater and more like a contrail, a long stripe. The reports do not give a duration for the disturbance, so we do not claim one. Plasma regions of this kind tend to refill, but how fast is a question the available records leave open.
Readers tracking the hardware side of the program should also see our look at the Artemis III SLS core stage and short stack. It covers the same 212-foot booster class that Artemis II used, which will fly again.
Several Meters of Error: What It Means for Receivers
Several meters sounds small. For a hiker with a phone, it is. For lane-level navigation, precision agriculture, surveying and drone control, it is the difference between working and not. Ground stations flagged changes equivalent to positioning errors of that size. The key word is equivalent. The stations measured electron changes, and the researchers translated them into the position error an unprotected receiver would have shown.
That distinction is where hardware enters the story. Receivers differ widely in how they handle ionospheric delay. Cheap single-band chips lean on a broadcast model. Dual-band and multi-band receivers measure the delay by comparing signals at different frequencies, which cancels most of the effect. Survey-grade gear and correction services go further. A disturbance that would push a budget receiver off by several meters may barely move a good one.
| Receiver approach | How it handles ionospheric delay | Exposure to a launch disturbance |
|---|---|---|
| Single-band chip, model-based | Applies a broadcast average correction | Highest, a local depletion breaks the model |
| Dual-band consumer receiver | Compares two frequencies to measure delay | Lower, most of the shift cancels |
| Multi-constellation, multi-band | Uses more satellites and frequencies together | Lower still, redundancy limits damage |
| Survey-grade with corrections | Adds reference-station data and filtering | Lowest, built for tectonic-scale precision |
| Inertial-assisted navigation | Blends motion sensors with GPS fixes | Limited, sensors bridge short glitches |
The table is a general guide to how the technology works, not a measurement of the Artemis II event. The reports do not say which receiver types saw which errors. Treat it as context for reading the findings.
Artemis II vs Starship: Up to 10 Times More Intense
The comparison with Starship surprised many readers. Space.com notes that Starship produces roughly twice the liftoff thrust of the SLS, so a naive guess would say Starship disturbs the ionosphere more. The report says the opposite: Artemis II disturbances ran up to 10 times more intense than those seen after Starship test launches.
Thrust at the pad is not the variable that decides this. Where the engines burn, for how long and what they burn decide it. The reporting points to the upper-stage burns as the stronger of the two Artemis II disturbances. A crewed lunar mission relies on those high-altitude firings, while a Starship test flight follows a different profile.
| Factor | Artemis II (SLS) | Starship test launches |
|---|---|---|
| Liftoff thrust (per Space.com) | Lower | About twice the SLS |
| Reported ionospheric disturbance | Up to 10 times more intense | Baseline |
| Strongest disturbance source | Upper-stage thruster burns | Not specified in the records |
| Footprint reported | About 3,100 miles (5,000 km), east to west | Not specified in the records |
| Mission type | Crewed flight around the Moon | Test flights |
The comparison carries a policy angle. Launch cadence is the open question, and our piece on Starship launch cadence and pad limits explains why it matters. If one Artemis II launch leaves a continent-scale feature, regulators and navigation engineers will ask what a busy launch calendar does to the same layer. The reports do not answer that, and we will not guess at numbers.
“Tore a Hole in the Atmosphere”: Headline vs Evidence
The viral framing needs a straight reading. The Space.com article carries the dramatic headline, but the reporting beneath it describes temporary ionospheric disturbances. Nothing in the available records describes damage that persists, a breach of the atmosphere or a threat to the ozone layer. The word “hole” is shorthand for a region of depleted electrons.
The same caution applies to “disrupted GPS signals.” The reports describe detected, temporary, localized positioning errors of several meters. They do not describe a general GPS outage, failed satellites or grounded aircraft. No count of affected users appears. No duration for the errors appears. No operational consequence, such as a missed approach, a stalled tractor or a mis-navigated vehicle, is documented. Anyone who claims otherwise has gone past the sources.
What Is Unconfirmed
- A literal, lasting hole in the atmosphere: not supported, the reports describe temporary depletion.
- A broad GPS outage: not supported, the errors were localized and detected at ground stations.
- Any number of affected users or any error duration: absent from the available records.
- Any on-record statement from NASA or a named researcher in our verified set: none was available to us, so this article carries no direct quotes.
Who Could Be Affected: Phones, Cars, Drones, Survey Gear
The practical risk depends on the job. A navigation app on a phone can tolerate a few meters of drift for a minute or two. Autonomous driving cannot tolerate it as easily, since lane-level decisions rely on position accuracy. Drones that hold position by GPS face similar limits. Agriculture and construction crews that use centimeter-level guidance depend on correction services and would notice any change in the signal.
The scientific community has a more direct stake. The stations that caught the disturbance belong to networks built to measure tiny ground movements, such as slow tectonic shifts. A rocket plume that adds noise to those signals can look like ground motion if analysts do not account for it. That makes launch-driven ionospheric events a data-quality issue for geoscience, quite apart from consumer navigation.
Other navigation systems face the same physics. Any satellite system that sends radio signals through the ionosphere sees delay changes. India’s regional system, covered in our report on the GSLV launch of NVS-03 for NavIC, relies on the same kind of signal path, so the lesson applies well beyond one American constellation.
Historical Context: Launches and the Upper Atmosphere
Scientists have known for decades that rockets affect the ionosphere. Large launches leave electron-depleted regions, and ground GPS networks have become the standard tool for spotting them. What changed with the Starship test flights was the scale and the frequency of heavy vehicles, which gave researchers more events to study. Artemis II added a crewed, lunar-bound profile with long upper-stage burns, and the reports say it produced the largest effect of any launch observed so far.
Artemis II also sits in a broader program arc. NASA has been reshaping the plan for later missions, as we covered in NASA’s streamlined Artemis path toward a 2028 landing. Each future SLS flight will repeat the core-stage and upper-stage pattern, so each is a chance to test whether the Artemis II footprint was typical or a one-off. Researchers can now plan observations in advance rather than dig through archived data after the fact.
Market and Industry Impact for Navigation Hardware
No company has issued a recall, a statement or a revised spec because of this study, and the records contain no market data tied to it. The impact is indirect. The result strengthens the case for multi-band GNSS chips in phones, cars and drones, since those chips cut exposure to ionospheric shifts. It also supports the use of sensor fusion, where inertial units cover short GPS glitches.
Satellite-navigation suppliers, automotive navigation teams and drone makers now have a real-world example to cite when they argue for better receivers. It is a modest tailwind for higher-end silicon and correction services, not a market shock. Space-industry investors face a related question. Funding into space hardware keeps climbing, as our look at space hardware investment shows, and a busier launch calendar means more events like this one. For broader device and component coverage, see our hardware section.
Five Predictions for Launch-Driven GPS Disturbances
These are our analysis, not reported facts. We built them from the confirmed findings above and label them as judgment.
- Researchers will watch the next SLS flight closely. A second data point from the same rocket would show whether the Artemis II footprint was typical.
- Launch-driven ionospheric monitoring becomes routine. Ground GPS networks already supply the data, so adding launch alerts costs little.
- Receiver makers will market ionospheric resilience. Multi-band support is the obvious selling point for cars and drones.
- Regulators will ask about cadence. As Starship flies more often, agencies that oversee launches may add atmospheric effects to their questions.
- Geoscience teams will filter launch events. Networks that track ground motion will flag launch windows so plume noise does not read as movement.
What to Watch Next
Three gaps need filling. First, duration: how long did the disturbance last, and when did signals return to normal? Second, impact: did any operator log a real-world problem? Third, repeatability: does the same effect appear on later SLS flights? Until those answers arrive, the responsible summary is that Artemis II produced the largest launch-driven ionospheric disturbance reported so far, with temporary errors of several meters detected at ground stations.
The takeaway: the science is solid and interesting, and the headline is louder than the evidence. The launch changed a layer of the upper atmosphere for a while. It did not break GPS, and it did not tear anything open for good.
FAQ: Artemis II, the Ionosphere and GPS
Did Artemis II really tear a hole in the atmosphere?
Not in the literal sense. Reports describe temporary regions of the ionosphere with fewer free electrons than normal. “Hole” is shorthand for that depletion, and the layer refills over time.
Did the launch knock out GPS?
No broad outage has been reported. Ground-based stations detected changes equivalent to positioning errors of several meters, and those were temporary and localized.
How large was the affected area?
The disturbances extended roughly 3,100 miles (5,000 kilometers) from east to west across North America, according to the reporting.
Which part of the rocket caused the biggest effect?
Researchers tied one disturbance to the 212-foot (65-meter) SLS core stage and another to two later upper-stage thruster burns. The upper-stage disturbance was the more prominent.
How does it compare with Starship?
The report says the Artemis II disturbances were up to 10 times more intense than those seen after Starship test launches, even though Starship has about twice the SLS liftoff thrust.
Will this affect my phone or car navigation?
The available records give no number of affected users and no documented real-world failures. Dual-band and multi-band receivers handle ionospheric shifts better than single-band chips, so newer devices carry less risk.
Did NASA or the researchers comment on the record?
We found no verified on-record quote from NASA or a named researcher in the material available for this article, so we paraphrase the published reports instead of quoting anyone.
