"Sagittarius A, the nucleus of the bulge, churns with jam-packed clusters of old red giants, dotted with young supergiant and Wolf-Rayet stars. Those new stars are mystifying. Savage tidal forces, caused by an overwhelming gravitational pull, should prevent their birth."
Sag A East is an expansive supernova remnant just 6 light years from the gravitational core. The star’s implosion—less than 100,000 years ago—was 75 times more energic than normal. Perhaps it drifted so close to the heart that gravity squeezed it to a freakish degree.
Generator Unlocked
Circumnuclear Disk
The CND is a ring of ionized hydrogen in a region called Sag A West. It looks like a three-arm spiral from Earth, but it’s a torus—a donut shape. Supercharged molecules zoom around it like atomic race cars, while clouds of gas and dust drop into the dark hole.
Supernova Remnant
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eROSITA Bubbles
Engulfing the giant Fermi bubbles above and below the galactic disk is an even bigger, more energetic pair. The eROSITA bubbles, named after the X-ray telescope that spotted them, are shock waves from a powerful but mysterious release of energy in the core.
Galactic Nucleus Rank 3
Gamma-Ray Constellations
The Fermi Space Telescope peered at 3,000 gamma-ray sources to map out galactic black holes, blazars (monster black holes), pulsars, and other objects. For fun, the team turned them into constellations: Tardis, Enterprise, Godzilla, Hulk, Mt. Fuji, and Einstein.