Beacon of Light

NASA News 18 May 2026 2 min read

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NASA's James Webb Space Telescope captured a detailed image of Messier 77 (M77), a barred spiral galaxy located 45 million light-years away in the constellation Cetus, released as Picture of the Month on May 7, 2026. The image highlights the galaxy's intensely luminous core, which is powered by an active galactic nucleus: gas drawn into a tight, rapid orbit by the gravitational pull of a central supermassive black hole heats up and emits large amounts of radiation. The prominent bright lines extending from the center are diffraction spikes, an optical artifact produced by the telescope's mirror structure, not a physical feature of the galaxy itself.

Why it matters

M77 is a well-studied example of an active galactic nucleus (Seyfert galaxy) and its relative proximity makes it a valuable laboratory for understanding how supermassive black holes accrete matter and influence galaxy evolution. High-resolution Webb observations like this one can refine models of black hole feeding mechanisms and energetic feedback processes relevant to galaxy formation more broadly.

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Understand the Science

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A spiral galaxy shown in mid-infrared light. The image is dominated by an extremely bright glow from the galaxy’s nucleus. Six large and two smaller rays of light emit from the center, which are diffraction spikes created by the telescope’s optics. The galaxy’s spiral arms are visible by two lines of glowing orange bubbles which whirl out into the disc. Swirling blue clouds of dust make up the rest of the galaxy.

This latest Picture of the Month from the NASA/ESA/CSA James Webb Space Telescope features Messier 77 (M77), a barred spiral galaxy famous and appreciated among astronomers for its combination of relative proximity and spectacular features to study. It is located 45 million light-years away in the constellation Cetus (The Whale).

ESA/Webb, NASA & CSA, A. Leroy

The heart of galaxy M77 shines brightly in this May 7, 2026, image from NASA’s James Webb Space Telescope. The intense glow is due to gas being pulled by the strong gravity of the central black hole into a tight and rapid orbit around it. The motion of the gas causes it to heat up, releasing tremendous amounts of radiation.

The bright lines radiating out of the center are diffraction spikes. The spikes are not a physical feature of the galaxy, but an optical effect caused by the telescope itself.