galactic plane

noun

, Astronomy.

1. the plane of the galactic equator.

galactic plane

noun

1. the plane passing through the spiral arms of the Galaxy

Word History and Origins

Origin of galactic plane¹

First recorded in 1840–50

Example Sentences

"Our new discovery lies far off the Galactic Plane, so there are only a handful of stars nearby, and we're now certain one star system, in particular, is generating the radio waves."

From Science Daily

By studying magnesium atom emission signals, the team was also able to map the morphology of these winds, which appear as cones of matter perpendicularly ejected from both sides of the galactic plane.

From Science Daily

Image: The new survey dataset of the galactic plane of the Milky Way contains 3.32 billion celestial objects — the largest such catalogue so far.

From Space Scoop

Astronomers find it extremely challenging to observe stars and other celestial objects in the galactic plane.

From Space Scoop

“This emission is like a haze along the galactic plane,” Fusco says.

From Scientific American