measure, measurement, measuring, mensuration - the act or process of measuring; "the measurements were carefully done"; "his mental measurings proved remarkably accurate"

radio observation - an observation made with a radio telescope

looking, looking at, look - the act of directing the eyes toward something and perceiving it visually; "he went out to have a look"; "his look was fixed on her eyes"; "he gave it a good looking at"; "his camera does his looking for him"

monitoring - the act of observing something (and sometimes keeping a record of it); "the monitoring of enemy communications plays an important role in war times"

sighting - the act of observing; "several sightings of enemy troops were reported"

stargazing - observation of the stars

fact - a piece of information about circumstances that exist or events that have occurred; "first you must collect all the facts of the case"

scientific fact - an observation that has been confirmed repeatedly and is accepted as true (although its truth is never final)

attending, attention - the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others

mind - attention; "don't pay him any mind"

remark - explicit notice; "it passed without remark"

comment, remark - a statement that expresses a personal opinion or belief; "from time to time she contributed a personal comment on his account"

Parkinson's law - C. Northcote Parkinson's cynical observation that the number of subordinates in an organization will increase linearly regardless of the amount of work to be done

Parkinson's law - C. Northcote Parkinson's cynical observation that work will expand so as to fill the time available for its completion