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The galactic plane is the plane on which the majority of a disk-shaped galaxy's mass lies. The directions perpendicular to the galactic plane point to the galactic poles. In actual usage, the terms galactic plane and galactic poles usually refer specifically to the plane and poles of the Milky Way, in which Planet Earth is located.
The origin essentially coincides with the Earth, because the supergalactic plane is identified as a plane observed from Earth. The north supergalactic pole (SGB = 90°) lies in the constellation Hercules at galactic coordinates (l z = 47.37°, b z = +6.32°), or approximately RA = 18.9 h, Dec = +15.7°.
The galactic plane is inclined at an angle of 31° ± 7° to the line of sight to the Earth and the long axis is oriented along a position angle of 219° ± 4°. [4] The northwest side of the galaxy is more strongly obscured by dust, suggesting it is the near side. [12]
The galactic coordinate system uses the approximate plane of the Milky Way Galaxy as its fundamental plane. The Solar System is still the center of the coordinate system, and the zero point is defined as the direction towards the Galactic Center. Galactic latitude resembles the elevation above the galactic plane and galactic longitude ...
The galactic coordinate system is a celestial coordinate system in spherical coordinates, with the Sun as its center, the primary direction aligned with the approximate center of the Milky Way Galaxy, and the fundamental plane parallel to an approximation of the galactic plane but offset to its north.
The VSS Unity space plane is set to carry its first full crew to the edge of space on Sunday. The launch is now set for 10:30 am ET. Virgin Galactic is livestreaming the whole thing.
William Napier and Victor Clube in their 1979 Nature article, ”A Theory of Terrestrial Catastrophism”, [1] proposed the idea that gravitational disturbances caused by the Solar System crossing the plane of the Milky Way galaxy are enough to disturb comets in the Oort cloud surrounding the Solar System. This sends comets in towards the inner ...
A galactic orientation describes the spatial orientation of a galactic plane, where such exists for a given galaxy. For a spiral galaxy , this can be obtained from the inclination of the galactic plane to the plane of the sky , and the position angle of the major axis as viewed from Earth.