Galactic Center
The innermost region of the Milky Way, spanning tens of thousands of light-years, containing layers such as the nuclear bulge, the nuclear star cluster, and Sagittarius A*, with a stellar density far exceeding that of the spiral arms.
Timeline (last 90 days)
The Galactic Center usually refers to the innermost region of the Milky Way spanning tens of thousands of light-years, containing three key layers: the nuclear bulge, the nuclear star cluster, and Sagittarius A*.
Sagittarius A* is the supermassive black hole at the center of the Milky Way, about 4.3 million times the mass of the Sun, whose position was first confirmed by radio astronomical observations in 1974.
Near the Sun, stars are typically separated by several light-years; near the Galactic Center, the average stellar density rises to about one thousand stars per cubic light-year, with an average spacing of about one light-month.
In the innermost core region of the Galactic Center, within a range of a few light-years, there are about ten million stars, with a typical stellar spacing of about one light-week.
The Galactic Center offers strategic advantages for advanced civilizations, including shorter travel times, more compact supply chains, shorter communication delays, and greater resource abundance.
Underground habitation may be the norm for the survival of civilizations in the Galactic Center, with kilometers-thick rock, ice, or oceans serving as excellent radiation shielding.
All Facts (6)
The Galactic Center usually refers to the innermost region of the Milky Way spanning tens of thousands of light-years, containing three key layers: the nuclear bulge, the nuclear star cluster, and Sagittarius A*.
50%UnverifiedSagittarius A* is the supermassive black hole at the center of the Milky Way, about 4.3 million times the mass of the Sun, whose position was first confirmed by radio astronomical observations in 1974.
50%UnverifiedNear the Sun, stars are typically separated by several light-years; near the Galactic Center, the average stellar density rises to about one thousand stars per cubic light-year, with an average spacing of about one light-month.
50%UnverifiedIn the innermost core region of the Galactic Center, within a range of a few light-years, there are about ten million stars, with a typical stellar spacing of about one light-week.
50%UnverifiedThe Galactic Center offers strategic advantages for advanced civilizations, including shorter travel times, more compact supply chains, shorter communication delays, and greater resource abundance.
50%UnverifiedUnderground habitation may be the norm for the survival of civilizations in the Galactic Center, with kilometers-thick rock, ice, or oceans serving as excellent radiation shielding.
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