Looming Looming Looming is a term found in the study of perception, as it relates directly to psychology. Looming refers to the rapid expansion in the size of any given image. As the image becomes increasingly large on the perceiver's retina, i.e., when an object "looms", there is an automatic physiological response to perceive the object as an approaching object or surface, instead of one that is stationary or receding. Evidence indicates that looming perception is not limited to the visual modality, but can occur due to auditory or even tactile stimuli. There is a different type of mirage that is
International Association for the Advancement of Space Safety mission objectives is also included in the definition of safety. For example, unwanted collision of a satellite with another satellite, or with a space debris. Fig.1 shows the various fields of space safety, their national, international or global scope of interest, and the principal means for achieving safety (by design, or operations), although a mixture would be generally used. Although safety refers to threats that are non-voluntary in nature (design errors, malfunctions, human errors, etc.), security refers to threats which are voluntary (i.e. of aggressive nature such as use of anti-satellite weapons). In some languages a single term is used