APOD: 2026 October 4 – Supernumerary Rainbows over New Jersey

What this means

A factual summary is pending editorial review. The complete official release is reproduced below with issuer attribution and a direct link to the original publication.

Official release

Source material from NASA. The wording below is the issuer’s statement.

APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

Supernumerary Rainbows over New Jersey

Explanation: Yes, but can your rainbow do this? After the remnants of Hurricane Florence passed over the Jersey Shore, New Jersey, USA in 2018, the Sun came out in one direction but something quite unusual appeared in the opposite direction: a hall of rainbows. Over the course of the next half hour, to the delight of the photographer and his daughter, vibrant supernumerary rainbows faded in and out, with at least five captured in this featured single shot. Supernumerary rainbows only form when falling water droplets are all nearly the same size and typically less than a millimeter across. Then, sunlight will not only reflect from inside the raindrops, but interfere, a wave phenomenon similar to ripples on a pond when a stone is thrown in. In fact, supernumerary rainbows can only be explained with waves, and their noted existence in the early 1800s was considered early evidence of light's wave nature.

Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)

Tomorrow's picture: open space

Date

October 4, 2026

Credit & Copyright

John Entwistle

Authors & editors:

Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti, Keighley Rockcliffe

A service of:

ASD at NASA / GSFC,

NASA Science Activation & Michigan Tech. U.

Random APOD Generator

Yesterday's Image

APOD: 2026 October 3 – Selfie at Vera Rubin Ridge

Tomorrow's Image

Release text attributed to NASA. Consult the official publication for any subsequent corrections or updates.