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ARKISTOITU SISÄLTÖ
21 MARRAS. 2025
Julkaisupäivä
14363
Katselukerrat
Solar activity follows an 11-year cycle, alternating between periods of high or low intensity. Earlier this year, our star reached solar maximum, making major solar storms more probable.
On 11 November 2025, the Sun unleashed an intense X-class solar flare peaking around 10:04 UTC, followed less than an hour later by a CME traveling at and speed initially estimated around 1500 km/s. By 18:50 UTC the next day, the CME reached Earth, triggering a strong geomagnetic storm that peaked for six hours before decreasing to moderate levels.
In brief
Last week, Earth was hit by a large solar storm. Within 48 hours, the Sun launched three consecutive coronal mass ejections (CME) which struck our planet, triggering a severe geomagnetic storm, which peaked for about six hours, before calming down.Despite its intensity, the storm’s impact on critical technologies was limited, and posed no direct biological risk to people on Earth. Having reached solar maximum earlier this year, our star is in a phase where large storms are increasingly likely.The event provided an opportunity for multiple ESA missions, whether orbiting Earth or far into deep space, to collect radiation data, which is now being analysed.
Solar activity follows an 11-year cycle, alternating between periods of high or low intensity. Earlier this year, our star reached solar maximum, making major solar storms more probable.
On 11 November 2025, the Sun unleashed an intense X-class solar flare peaking around 10:04 UTC, followed less than an hour later by a CME traveling at and speed initially estimated around 1500 km/s. By 18:50 UTC the next day, the CME reached Earth, triggering a strong geomagnetic storm that peaked for six hours before decreasing to moderate levels.
Mediamodaali
ESA closely monitored this powerful space weather event, collected detailed information from all its expert service centres and disseminated key information with stakeholders. Although it is possible to forecast the probability of an eruption, the exact time of arrival of the CME and the precise magnitude of the storm was still difficult to predict but new ESA missions aim to reduce these uncertainties.
ESA’s Vigil mission introduces a new way of watching the Sun, observing its ‘side’ from Lagrange Point 5 (L5) to provide continuous insight into solar activity and monitor space weather conditions close to the Sun–Earth line. Scheduled for launch in 2031, Vigil will detect potentially hazardous solar events before they rotate into Earth view, giving us early knowledge of their characteristics and valuable time to protect spacecraft and critical ground infrastructure.
Current in-situ operational monitoring of the incoming solar wind is done from Lagrange Point 1 (L1) and allowed us to predict the impact of this solar storm only about 20 minutes beforehand. Located more than 15 million kilometres from Earth, approximately ten times further away than L1, another proposed mission, SHIELD, would be able to give an alert of such a storm around two and a half hours before impact, which would allow critical infrastructure operators to efficiently prepare and minimise geomagnetic storm impacts.
Mediamodaali
ESA closely monitored this powerful space weather event, collected detailed information from all its expert service centres and disseminated key information with stakeholders. Although it is possible to forecast the probability of an eruption, the exact time of arrival of the CME and the precise magnitude of the storm was still difficult to predict but new ESA missions aim to reduce these uncertainties.
ESA’s Vigil mission introduces a new way of watching the Sun, observing its ‘side’ from Lagrange Point 5 (L5) to provide continuous insight into solar activity and monitor space weather conditions close to the Sun–Earth line. Scheduled for launch in 2031, Vigil will detect potentially hazardous solar events before they rotate into Earth view, giving us early knowledge of their characteristics and valuable time to protect spacecraft and critical ground infrastructure.
Current in-situ operational monitoring of the incoming solar wind is done from Lagrange Point 1 (L1) and allowed us to predict the impact of this solar storm only about 20 minutes beforehand. Located more than 15 million kilometres from Earth, approximately ten times further away than L1, another proposed mission, SHIELD, would be able to give an alert of such a storm around two and a half hours before impact, which would allow critical infrastructure operators to efficiently prepare and minimise geomagnetic storm impacts.
Mediamodaali
ESA closely monitored this powerful space weather event, collected detailed information from all its expert service centres and disseminated key information with stakeholders. Although it is possible to forecast the probability of an eruption, the exact time of arrival of the CME and the precise magnitude of the storm was still difficult to predict but new ESA missions aim to reduce these uncertainties.
ESA’s Vigil mission introduces a new way of watching the Sun, observing its ‘side’ from Lagrange Point 5 (L5) to provide continuous insight into solar activity and monitor space weather conditions close to the Sun–Earth line. Scheduled for launch in 2031, Vigil will detect potentially hazardous solar events before they rotate into Earth view, giving us early knowledge of their characteristics and valuable time to protect spacecraft and critical ground infrastructure.
Current in-situ operational monitoring of the incoming solar wind is done from Lagrange Point 1 (L1) and allowed us to predict the impact of this solar storm only about 20 minutes beforehand. Located more than 15 million kilometres from Earth, approximately ten times further away than L1, another proposed mission, SHIELD, would be able to give an alert of such a storm around two and a half hours before impact, which would allow critical infrastructure operators to efficiently prepare and minimise geomagnetic storm impacts.
Mediamodaali
Mediamodaali
Data from Earth observation missions
ESA closely monitored this powerful space weather event, collected detailed information from all its expert service centres and disseminated key information with stakeholders. Although it is possible to forecast the probability of an eruption, the exact time of arrival of the CME and the precise magnitude of the storm was still difficult to predict but new ESA missions aim to reduce these uncertainties.
ESA’s Vigil mission introduces a new way of watching the Sun, observing its ‘side’ from Lagrange Point 5 (L5) to provide continuous insight into solar activity and monitor space weather conditions close to the Sun–Earth line. Scheduled for launch in 2031, Vigil will detect potentially hazardous solar events before they rotate into Earth view, giving us early knowledge of their characteristics and valuable time to protect spacecraft and critical ground infrastructure.
Current in-situ operational monitoring of the incoming solar wind is done from Lagrange Point 1 (L1) and allowed us to predict the impact of this solar storm only about 20 minutes beforehand. Located more than 15 million kilometres from Earth, approximately ten times further away than L1, another proposed mission, SHIELD, would be able to give an alert of such a storm around two and a half hours before impact, which would allow critical infrastructure operators to efficiently prepare and minimise geomagnetic storm impacts.
Mediamodaali
Impact on science missions
ESA closely monitored this powerful space weather event, collected detailed information from all its expert service centres and disseminated key information with stakeholders. Although it is possible to forecast the probability of an eruption, the exact time of arrival of the CME and the precise magnitude of the storm was still difficult to predict but new ESA missions aim to reduce these uncertainties.
ESA’s Vigil mission introduces a new way of watching the Sun, observing its ‘side’ from Lagrange Point 5 (L5) to provide continuous insight into solar activity and monitor space weather conditions close to the Sun–Earth line. Scheduled for launch in 2031, Vigil will detect potentially hazardous solar events before they rotate into Earth view, giving us early knowledge of their characteristics and valuable time to protect spacecraft and critical ground infrastructure.
Current in-situ operational monitoring of the incoming solar wind is done from Lagrange Point 1 (L1) and allowed us to predict the impact of this solar storm only about 20 minutes beforehand. Located more than 15 million kilometres from Earth, approximately ten times further away than L1, another proposed mission, SHIELD, would be able to give an alert of such a storm around two and a half hours before impact, which would allow critical infrastructure operators to efficiently prepare and minimise geomagnetic storm impacts.
Mediamodaali
Protecting astronauts and satellites
ESA closely monitored this powerful space weather event, collected detailed information from all its expert service centres and disseminated key information with stakeholders. Although it is possible to forecast the probability of an eruption, the exact time of arrival of the CME and the precise magnitude of the storm was still difficult to predict but new ESA missions aim to reduce these uncertainties.
ESA’s Vigil mission introduces a new way of watching the Sun, observing its ‘side’ from Lagrange Point 5 (L5) to provide continuous insight into solar activity and monitor space weather conditions close to the Sun–Earth line. Scheduled for launch in 2031, Vigil will detect potentially hazardous solar events before they rotate into Earth view, giving us early knowledge of their characteristics and valuable time to protect spacecraft and critical ground infrastructure.
Current in-situ operational monitoring of the incoming solar wind is done from Lagrange Point 1 (L1) and allowed us to predict the impact of this solar storm only about 20 minutes beforehand. Located more than 15 million kilometres from Earth, approximately ten times further away than L1, another proposed mission, SHIELD, would be able to give an alert of such a storm around two and a half hours before impact, which would allow critical infrastructure operators to efficiently prepare and minimise geomagnetic storm impacts.
Mediamodaali
ESA’s future fleet of space weather satellites
ESA closely monitored this powerful space weather event, collected detailed information from all its expert service centres and disseminated key information with stakeholders. Although it is possible to forecast the probability of an eruption, the exact time of arrival of the CME and the precise magnitude of the storm was still difficult to predict but new ESA missions aim to reduce these uncertainties.
ESA’s Vigil mission introduces a new way of watching the Sun, observing its ‘side’ from Lagrange Point 5 (L5) to provide continuous insight into solar activity and monitor space weather conditions close to the Sun–Earth line. Scheduled for launch in 2031, Vigil will detect potentially hazardous solar events before they rotate into Earth view, giving us early knowledge of their characteristics and valuable time to protect spacecraft and critical ground infrastructure.
Current in-situ operational monitoring of the incoming solar wind is done from Lagrange Point 1 (L1) and allowed us to predict the impact of this solar storm only about 20 minutes beforehand. Located more than 15 million kilometres from Earth, approximately ten times further away than L1, another proposed mission, SHIELD, would be able to give an alert of such a storm around two and a half hours before impact, which would allow critical infrastructure operators to efficiently prepare and minimise geomagnetic storm impacts.
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