One of the mantras of amateur astronomy is ‘‘aperture rules.’’ This means you’ll see more detail as you observe through ever-larger telescopes. Few celestial objects demonstrate this better than ...

Stephan’s Quintet, one of the first science targets of the James Webb Space Telescope, sits just 0.5° southwest of NGC 7331, making it one of the easiest tight groups to find. Halton C. Arp listed ...

Subaru Telescope has added another dimension of information about one of the most studied of all compact galaxy groups — Stephan’s Quintet. Located within the borders of the constellation Pegasus, ...

This is an extremely compact galaxy group known as Stephan’s Quintet; it is located about 300 million light-years from Earth and is the first compact galaxy group ever discovered. All five galaxies in ...

One of the mantras of amateur astronomy is ‘‘aperture rules.'' This means you'll see more detail as you observe through ever-larger telescopes. Few celestial objects demonstrate this better than ...