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NASA’s Astronomy Picture of the Day for Oct. 4, 2026, features a photograph taken on the New Jersey shore in 2018, after the remnants of Hurricane Florence passed through. The image captures at least five supernumerary rainbows, an optical effect formed when sunlight waves interfere after passing through similarly sized raindrops.
NASA’s Astronomy Picture of the Day for Oct. 4, 2026, features a photograph showing at least five supernumerary rainbows over the New Jersey shore after the remnants of Hurricane Florence passed in 2018. The closely spaced, faintly repeated arcs form through the wave behavior of light in raindrops, illustrating an optical effect associated with interference.
NASA’s APOD account says the scene appeared after the storm remnants passed over the Jersey Shore. The Sun was visible in one direction, while a series of rainbows appeared in the opposite direction. Photographer John Entwistle captured at least five of the additional arcs in the featured image. The account says the colors faded in and out over about half an hour, as Entwistle and his daughter watched.
The NASA explanation says supernumerary rainbows form when falling water droplets are nearly the same size, typically less than a millimeter across. Sunlight interacting with the droplets produces interference between light waves, creating additional colored bands close to the main rainbow. The effect depends on the droplets’ size distribution; it is not simply a second, separate rainbow produced by another source of light.
APOD describes the effect as one that requires a wave explanation. Its account places recognition of supernumerary rainbows in the early 19th century and says their existence was considered early evidence for light’s wave nature. The image credit names Entwistle, while the explanation is credited to APOD authors and editors Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti and Keighley Rockcliffe.
A Visible Sign of Light Interference
The photograph shows supernumerary bands in a weather scene. NASA’s explanation attributes them to interference between light waves after sunlight passes through droplets of similar size. The effect connects the image to the wave behavior of light.
The bands depend on atmospheric conditions, including sunlight and the distribution of droplet sizes, and may change as those conditions change. NASA’s account says the arcs appeared and faded over roughly 30 minutes. The APOD entry documents the display and provides an explanation of the associated physics.
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From Florence’s Remnants to APOD
The photograph dates to 2018, when the remnants of Hurricane Florence passed over the Jersey Shore. NASA’s APOD page revisited the image on Oct. 4, 2026; the publication date is not the date the photograph was taken. The source identifies the location broadly as the Jersey Shore, New Jersey, but does not give a more specific site or the precise date and time of the observation.
APOD is NASA’s daily feature of an image or photograph related to astronomy or the wider universe, accompanied by an explanation written by professional astronomers. This entry focuses on an atmospheric optical phenomenon rather than a distant astronomical object. The NASA page lists the credit as John Entwistle and identifies the service as supported by NASA’s Astrophysics Science Division at Goddard Space Flight Center, NASA Science Activation and Michigan Technological University.
The page also gives a broad scientific background: supernumerary rainbows were noted in the early 1800s and were regarded as evidence supporting a wave account of light. NASA’s explanation compares interference to the pattern of ripples that can form when a stone is thrown into a pond. The analogy helps describe how waves can reinforce or diminish one another, though the pictured colors arise from light interacting with raindrops.
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Details the APOD Does Not Give
The NASA page does not identify the exact date, time or precise location of the 2018 photograph. It describes the setting as the Jersey Shore after the remnants of Hurricane Florence passed, but gives no weather measurements or details about the raindrops present during the observation. The description of at least five captured bands is the APOD account’s report; it does not provide a separate measurement of the number or spacing of the arcs.
The page also does not say whether the photographer took additional images during the half-hour display or explain how the featured single shot was selected. It offers a general account of the physics rather than a detailed analysis of this particular image. No new storm or rainbow event is reported for October 2026: the date refers to the APOD publication, while the image records a scene from 2018.
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The Image Remains the Main Update
The Oct. 4 entry presents the photograph and its explanation as NASA’s daily feature; the supplied source does not announce a follow-up study, new observation or additional publication about the image. Readers can view the image and its accompanying explanation on the NASA Science APOD page. The page also directs visitors to its recurring feature inviting them to check which picture appeared on a birthday, for dates from 1995 onward.
For now, the confirmed development is the publication of this older New Jersey photograph in the 2026 APOD series. Further details about the original observation would require information beyond the APOD text, such as an account from the photographer or a more detailed image record. The page’s listed next picture is described only as “open space”; it gives no further description in the supplied material.
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Key Questions
What did NASA feature on Oct. 4, 2026?
NASA’s Astronomy Picture of the Day featured a 2018 photograph from the New Jersey shore showing at least five supernumerary rainbows after the remnants of Hurricane Florence passed.
What are supernumerary rainbows?
They are extra colored bands that appear close to a primary rainbow. NASA says they form when sunlight interacts with falling droplets that are nearly the same size, producing interference between light waves.
Were the rainbows photographed during Hurricane Florence?
The APOD says the photograph was taken after the remnants of Hurricane Florence passed over the Jersey Shore. It does not give the exact date or time of the image.
How long did the rainbow display last?
According to NASA’s account, the rainbows faded in and out over about half an hour. The source does not specify how long each individual band remained visible.
Who took the photograph?
The image credit names John Entwistle. NASA’s APOD page says he and his daughter watched the rainbows appear and fade.
Source: primary
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