conceptual art

An unidentified object submerged in water, not necessarily of paranormal origin.

Synonym of unidentified submerged object

(astronomy) Synonym of Kuiper belt object

(astronomy) Any trans-Neptunian object whose orbit is wholly within the scattered disc.

plural of versioned object base

plural of recovery time objective

(astronomy, physics) Any kind of astronomical body comprising normal baryonic matter that in sufficient numbers might explain the apparent presence of dark matter in galaxy halos.

Alternative form of massive compact halo object

(astronomy, physics) Alternative form of massive compact halo object