Search results
Results From The WOW.Com Content Network
1,000 pc 3.09×10 16: Projection effect of the Radcliffe wave and Split linear structures , [32] between which the Sun is currently travelling. [33] Orion Arm: 3000 pc (length) 9.26×10 16: The spiral arm of the Milky Way Galaxy through which the Sun is currently travelling. Orbit of the Solar System: 17,200 pc 5.31×10 17
The spiral arms are colored differently in order to highlight what structure belongs to which arm. H II regions are marked as dots colored in the same color as their spiral arm. They come in three sizes, measured by the excitation parameter U: small - U > 200 pc cm-2; medium - 200 > U > 110 pc cm-2; large - 110 > U > 70 pc cm-2; Date: 9 June ...
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more
This spiral arm contains about 10 million solar masses of gas, mostly hydrogen atoms and molecules. [3] It is named for its distance (more accurately, 3.3 kpc) from the Galactic Center. [3] It is about 5.2 kpc from the Sun, and is located in the fourth galactic quadrant. [2]
The curvature of the Earth is evident in the horizon across the image, and the bases of the buildings on the far shore are below that horizon and hidden by the sea. The simplest model for the shape of the entire Earth is a sphere. The Earth's radius is the distance from Earth's center to its surface, about 6,371 km (3,959 mi). While "radius ...
The galactic coordinates use the Sun as the origin. Galactic longitude (l) is measured with primary direction from the Sun to the center of the galaxy in the galactic plane, while the galactic latitude (b) measures the angle of the object above the galactic plane.
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. The result yields a direction perpendicular to the galactic plane. [1] In the case of the Milky Way, this is given by the coordinates of the galactic pole.