Webb reveals M77’s bright core, where the hot gas swirling around a supermassive black hole shines brighter than the rest of the galaxy combined.
Today’s image from the European Space Agency shows a galaxy whose center shines so brightly that it overshadows almost everything around it.
The galaxy is M77, a sprawling spiral galaxy filled with gas, dust and young stars.
The most striking feature of this Webb Space Telescope The image is its bright core, where a supermassive black hole feeds on matter being pulled toward it by gravity.
A black hole lights up the center
Black holes They themselves do not produce light. The glow comes from materials trapped in the harsh environment surrounding them.
Gas near the center of M77 is pulled into a tight, fast-moving orbit, where collisions and friction heat it to enormous temperatures and release intense radiation.
This compact region is known as the active galactic nucleus, or AGN. The central black hole in M77 is about eight million times the mass of the Sun.
The surrounding hot gas shines so intensely that the core outshines the rest of the galaxy combined, even in Webb’s sensitive observations.
Unusual orange web spikes
Some of the most striking features seem to radiate straight from the center of the M77.
The bright orange lines are not massive structures stretching across the galaxy. They are diffraction spikes produced by Webb himself.
The light bends slightly around the edges of the hexagonal segments of Webb’s primary mirror and around the struts that support his secondary mirror.
When the source is very bright and focused, this optical effect produces the familiar six-plus-two Webb pattern.
The stars These protrusions are usually visible, but the M77’s core is compact and luminous enough to form them as well.
Hubble, which has a different optical design, produces quadruple diffraction spikes.
A ring where stars are born
M77 has a lot more going on than its flaming center. It is also a prolific star-forming galaxy.
Webb’s near-infrared observations revealed a band of stars running across the central region, a structure that is difficult to see in visible-light images.
Around this bar is a starburst ring more than 6,000 light-years across. It forms where the inner edges of the galaxy’s spiral arms meet the central region.
Starburst regions produce new stars at unusually high rates. From Webb’s point of view, dense concentrations of glowing orange bubbles track the activity around the ring.
Because M77 is relatively close to Earth, astronomers have studied this region in extraordinary detail.
Dust fills the spiral arms
This image comes from the Webb Mid-Range Infrared Instrument, or MIRI, which can detect longer wavelengths of infrared light associated with interstellar dust.
The dust appears blue here, forming twisted filaments separated by dark hollows throughout the galaxy’s disk.
This substance is closely linked to the life of stars. Gas and dust provide the raw ingredients for new stars, as they age Death stars Return materials to their surroundings.
Newly formed star clusters can reshape nearby clouds through intense radiation and stellar winds.
in imageGlowing orange bubbles scattered along M77’s arms indicate places where tiny clusters have been carved into the surrounding material.
Why is M77 called the Squid Galaxy?
Webb’s detailed image captures only part of a much larger structure.
Beyond that, M77’s spiral arms connect to a faint ring of hydrogen gas extending thousands of light-years across, where additional star formation continues.
The weakest hydrogen filaments extend through this outer ring into intergalactic space. Its long, swirling appearance helped give M77 another name: the Squid Galaxy.
the galaxy It is also widely known as NGC 1068 and has long attracted astronomers because its active nucleus and active star formation can be studied within the same system.
Webb traces the life cycle of stars
The observations used to create the image came from the Webb 3707 observing program, which scanned nearby massive star-forming galaxies.
The goal was to build a detailed dataset that researchers could use in many different investigations.
Webb’s sharp infrared vision can separate individual star clusters while revealing reservoirs of gas and dust that might be missed at other wavelengths.
In M77, these details capture several stages of galactic life at once: the gathering of material in clouds, the formation of new stars, young clusters reshaping their surroundings, and a gas-consuming supermassive black hole at the center.
The result is a galaxy whose brightest points come from one of the darkest objects in the universe.
Image credit: ESA/Web, NASA and CSA, A. Leroy
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