zone of avoidance


Also found in: Acronyms, Wikipedia.

zone of avoidance

[′zōn əv ə′vȯid·əns]
(astronomy)
An irregularly shaped area in the Milky Way Galaxy in which no extragalactic nebulae are observed because of the presence of interstellar matter.
Mentioned in ?
References in periodicals archive ?
So, one of our next steps is to try to figure out why this zone of avoidance exists and whether it occurs around all red-giant stars," he said.
An ongoing mapping project, called HIZOA, has surveyed most of the zone of avoidance that's visible from the Northern Hemisphere.
9 billion years ago, that not enough ejecta remains recognizable today to define a zone of avoidance.
But there are no rays to the west and southwest--this zone of avoidance marks the direction the projectile came from.
On the other side of the zone of avoidance lies the Hydra-Centaurus Supercluster.