Sagittarius arm


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Sagittarius arm

See Galaxy.

Sagittarius arm

[‚saj·ə′ter·ē·əs ′ärm]
(astronomy)
A spiral arm of the Milky Way Galaxy that lies between the sun and the galactic center in the direction of the constellation Sagittarius.
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When astronomers realized that the Sagittarius arm (found in the northern sky) and the Carina arm (in the south) were part of a single, larger structure, they became known as the Sagittarius-Carina arm.
From here you'll discover that the view of the garden's center is blocked by the thick hedge representing the galaxy's Sagittarius Arm. This floral device makes two important points: you learn where the middle of the Milky Way appears relative to Earth, and you quickly understand why we can't see the center of the galaxy in visible light.
Crimson Tally, Louis Nenda (reminiscent of Star Wars' Han Solo) and a band of other explorers, scientists, and aliens are brought together to investigate a force that is destroying star systems in the Sagittarius Arm of the galaxy.
Here we see the Sagittarius Arm of our galaxy as it curves toward us.
By studying the distribution of stars of different populations in the solar neighborhood, they detected evidence of two spiral arms in the Milky Way, which they called the Orion and Perseus Arms, plus part of a third called the Sagittarius Arm. This seminal discovery was announced at the American Astronomical Society's Cleveland meeting and was reported in S&T's April 1952 issue.
The association lies toward the galactic center on the nearby Sagittarius Arm. In the opposite direction, on the Orion Arm (or "Spur"), we see the Orion Association, responsible for most of the Hunter's bright stars.
They delineate part of the next spiral arm inward from our Sun, the Sagittarius Arm.
I noticed that some bright nebulae are actually much closer to the galactic center than the Sagittarius Arm. There must be a hole in the arm's wall of dust through which we can see much farther to the inner Norma Arm.