The Galactic Center is the barycenter of the Milky Way and a corresponding point on the rotational axis of the galaxy. [1][2] Its central massive object is a supermassive black hole of about 4 million solar masses, which is called Sagittarius A*, [3][4][5] a compact radio source which is almost exactly at the galactic rotational center. [clarifi...

Sagittarius A*, abbreviated as Sgr A* (/ ˈsædʒ ˈeɪ stɑːr / SADGE-AY-star[3]), is the supermassive black hole [4][5][6] at the Galactic Center of the Milky Way.

2019年10月9日 · The center of our Milky Way galaxy is hidden from the prying eyes of optical telescopes by clouds of obscuring dust and gas. But in this stunning vista, the Spitzer Space Telescope’s infrared cameras penetrate much of the dust, revealing the stars of the crowded galactic center region.

2023年11月20日 · The NIRCam (Near-Infrared Camera) instrument on NASA’s James Webb Space Telescope’s reveals a portion of the Milky Way’s dense core in a new light. An estimated 500,000 stars shine in this image of the Sagittarius C (Sgr C) region, along with some as-yet unidentified features.

2022年10月31日 · The center of the Milky Way is a strange, chaotic place, home to star clusters, filaments of gas, forming stars, and a supermassive black hole.

2024年3月15日 · The project's Far-Infrared Polarimetric Large Area CMZ Exploration (FIREPLACE) created an infrared map that spans around 500 light-years across the center of the Milky Way over nine flights.

2024年12月20日 · In the inner 10,000 light-year region of the Milky Way, the galaxy’s spiral arm structure transitions into a dense, spherical “bulge” of stars. At its heart — and the dominant force in that area of the galaxy — is a supermassive black hole approximately 4 million times the mass of the Sun, called Sagittarius A* (pronounced Sagittarius ...

2015年7月9日 · When it is dark enough, and conditions are clear, the dusty ring of the Milky Way can certainly be discerned in the night sky. However, we can still only see about 6,000 light years into the disk...

The center of the Milky Way Galaxy is an extreme environment where gas temperatures, densities, and turbulence are about ten times higher than the rest of the Galaxy. In this central region inflowing gas can sometimes find its way into the supermassive black hole at …

2025年1月16日 · In the years following the launch of NASA’s Hubble Space Telescope, astronomers have tallied over 1 trillion galaxies in the universe.But only one galaxy stands out as the most important nearby stellar island to our Milky Way — the magnificent Andromeda galaxy (Messier 31).It can be seen with the naked eye on a very clear autumn night as a faint cigar …