Can debris be spotted from 35,000 feet?

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It is unlikely that debris can be spotted from 35,000 feet.

An unnamed pilot indicated that spotting objects in the ocean or on the ground from an aircraft's cruising altitude of 35,000 feet is not feasible. This assessment is based on general aviation knowledge regarding visibility from such heights.
Factors Affecting Visibility

Visibility from a cruising altitude is significantly limited by several factors. The sheer distance between the aircraft and the surface means that only large objects or those with significant contrast against their surroundings might be discernible.
Typical Visual Range

From a typical cruising altitude of 35,000 feet, the human eye has a very limited capacity to identify specific objects on the ground or in the water. Objects would need to be exceptionally large or distinctive to be noticed from this height.
Contrast and Object Size

The ability to spot anything from 35,000 feet depends heavily on the size of the object and its contrast with the environment. For instance, a small piece of debris in a vast ocean would be extremely difficult, if not impossible, to distinguish.
Aircraft Altitude and Observation

The altitude of 35,000 feet is standard for commercial airliners during their cruise phase. At this height, the perspective is such that ground features are generalised into patterns rather than identifiable individual items, unless they are of a very substantial scale.

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Can debris be spotted from 35,000 feet?

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