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NASA’s Astronomy Picture of the Day for Oct. 31, 2026, features a Halloween-night photograph of auroras above steaming fumaroles at Hverir in northeastern Iceland. NASA says geomagnetic storms driven by solar activity are producing auroras and that activity remains high as the Sun begins to decline from its cycle peak.
NASA’s Astronomy Picture of the Day for October 31, 2026, features greenish northern lights above steaming geothermal vents at Hverir in northeastern Iceland. The agency’s accompanying explanation says solar-triggered geomagnetic storms are driving energetic particles into Earth’s upper atmosphere and that auroral activity remains high as the Sun begins declining from the peak of its activity cycle.
The photograph was made at Hverir, a geothermally active area in Iceland’s volcanic landscape. NASA’s description identifies the pale columns in the scene as steam and gas released by local fumaroles, set against an aurora and a starry night sky. The post credits the image to Stéphane Vetter of Nuits sacrées.
In its explanation, NASA says geomagnetic storms, triggered by solar activity, have energized particles held in Earth’s magnetic field. At high latitudes, those particles enter the upper atmosphere and produce auroral displays. The picture pairs that atmospheric light with steam rising from the ground, creating the ghostlike effect referenced in its Halloween title, “Night on a Spooky Planet.”
NASA describes auroral activity as being in a high state for now, while characterizing the Sun as being in the early phase of decline from the peak of its solar activity cycle. The page does not provide a specific storm measurement or forecast. APOD is a daily NASA feature that presents an astronomical image or photograph with an explanation written by a professional astronomer.
Solar Activity Lights Iceland’s Sky
The image offers a timely visual account of how activity on the Sun can appear from Earth: not as a distant solar event, but as colored light in the night sky. NASA links the display to geomagnetic storms and particles interacting with the upper atmosphere. The Iceland setting adds a second natural process to the view, with geothermal vents releasing steam beneath the aurora.
For readers, the agency’s note about high auroral activity suggests that displays may remain possible while solar activity is still elevated. But the image alone does not establish that auroras will be visible from any particular location. Visibility depends on local conditions and the extent and timing of geomagnetic activity; NASA’s post does not give a location-specific forecast. Its closing suggestion that auroras could appear in other neighborhoods is an invitation to watch the sky, not a precise prediction.
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How the Hverir Display Forms
Hverir lies in northeastern Iceland, within a landscape shaped by volcanic and geothermal activity. Its fumaroles vent steam and gases, which can form visible columns in cold or damp air. In Vetter’s photograph, those ground-level plumes appear beneath the aurora, making the scene seem as if the sky and land are both producing ghostly shapes.
The aurora has a separate cause. NASA’s description connects it to solar activity: geomagnetic storms disturb Earth’s magnetic environment, and energetic particles reach the upper atmosphere at high latitudes. The resulting light is commonly called the northern lights in the Northern Hemisphere. NASA frames the October 31 image around this natural combination rather than reporting a new scientific discovery or a specific storm alert.
The APOD feature is published daily by NASA’s Astronomy Picture of the Day team. The October 31 entry lists Jerry Bonnell, Cecilia Chirenti, Robert Nemiroff and Keighley Rockcliffe among its authors and editors, and credits the service to NASA’s Astrophysics Science Division at Goddard Space Flight Center, NASA Science Activation and Michigan Technological University.
No Local Aurora Forecast Provided
NASA’s APOD entry does not state when the photograph was taken, give the strength or duration of the geomagnetic storms, or identify a particular solar event that produced this display. It also provides no numerical measure for its description of auroral activity as high. The page therefore supports a general account of the aurora’s cause and current activity, but not a detailed forecast.
It remains unclear from the post whether auroras will be visible from any specific community, or how long the elevated activity will continue. The possibility NASA mentions of displays in other neighborhoods should not be read as confirmation that they will occur at a given place or time. Local visibility and weather conditions are not addressed in the entry.
Watch for Updated Sky Conditions
NASA’s APOD page points readers toward the possibility of further auroral displays as solar activity remains elevated, but it gives no date or location for a future sighting. Readers seeking to know whether lights may be visible where they live will need current, location-specific space-weather and weather information rather than relying on the photograph alone.
The next APOD entry is listed as “many moons.” NASA’s daily feature is expected to continue with another image and explanation; the October 31 post itself does not announce a new observing campaign, alert or follow-up report.
Key Questions
What does NASA’s October 31 APOD show?
It shows auroral light above geothermal steam at Hverir, a geothermally active area in northeastern Iceland. NASA credits the photograph to Stéphane Vetter.
What causes the northern lights in the image?
NASA says solar activity triggered geomagnetic storms, which sent energetic particles into Earth’s upper atmosphere at high latitudes. Their interaction there produces auroral displays.
Are the pale columns in the picture part of the aurora?
No. NASA identifies them as steam and gas from local fumaroles. They rise from the geothermal area and appear in front of the night sky.
Does NASA predict auroras will be visible everywhere soon?
No. The APOD says other displays may appear in readers’ neighborhoods, but it gives no specific location or timing. It is not a local forecast.
What does NASA say about the solar cycle?
The entry says the Sun is in the early phases of decline from the peak of its activity cycle, while auroral activity on Earth remains high for now. It provides no numerical estimate or timetable.
Source: science.nasa.gov
