Description:
NGC 7331 is a large spiral galaxy in the constellation Pegasus, located about 40 million light-years from Earth.
On 14 July 2025, a bright supernova was discovered near its core. This image, taken on days 9 and 10 after the discovery, shows the supernova as a bright point just left of the galaxy’s centre - NGC 7331 being the prominent galaxy in the frame.
In the upper right, Stephan’s Quintet appears as a compact cluster of galaxies. Four of its members lie around 290 million light-years away and are actively interacting, displaying tidal tails and signs of galactic collisions. The fifth, NGC 7320, is much closer—roughly 40 million light-years away—and only appears to be part of the group.
