SN 2025pht in NGC 1637

The main image at left shows a view of spiral galaxy NGC 1637 from NASA's James Webb Space Telescope and Hubble Space Telescope. Hubble's shorter-wavelength data is represented in blue and green, while Webb's longer-wavelength data is represented in green and red. Panels at the right show a detailed view of a red supergiant star before and after it exploded. Before exploding, it is not visible to Hubble, only to Webb. Hubble shows the glowing aftermath in July 2025.

About the colours

This image is a composite of separate exposures acquired by the Hubble and James Webb Space Telescopes using the WFC3 and NIRCam instruments. Several filters were used to sample specific wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Blue= F438W + F555W, Green = F814W + F150W, Red = F277W + F444W

About the data

This image was created with Hubble data from proposal 17502 (D. Thilker) and Webb data from proposal: 4793 (E. Schinnerer).