Light Time Travel

Time travel

Time travel is the hypothetical activity of traveling into the past or future. Time travel is a concept in philosophy, space, time and fiction, particularly science fiction. In fiction, time travel is typically achieved through the use of a device known as a time machine. The idea of a time machine was popularized by H. G. Wells's 1895 novel The Time Machine.

Light-time correction

Light-time correction is a displacement in the apparent position of a celestial object from its true position caused by the object's motion during the time it takes its light to reach an observer.

Time

Time is the continuous progression of existence that occurs in an apparently irreversible succession from the past, through the present, and into the future. Time dictates all forms of action, age, and causality, being a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in conscious experience. Time is often referred to as the fourth dimension and the temporal dimension, in addition to the three spatial dimensions.

Travel

Travel is the movement of people between distant geographical locations. Travel can be done by foot, bicycle, automobile, train, boat, bus, airplane, ship or other means; with or without luggage; and can be one way or round trip. Travel can also include relatively short stays between successive movements, as in the case of tourism.

light

Noun

1. Electromagnetic radiation in the wavelength range visible to the human eye (about 400–750 nanometers): visible light.
2. Electromagnetic radiation in the wavelength range visible to the human eye or in nearby ranges (infrared or ultraviolet radiation).

Verb

1. To start (a fire).
2. To set fire to; to set burning.

time

Noun

1. The inevitable progression into the future with the passing of present and past events.
2. The feeling of the passage of events and their relative duration, as experienced by an individual.

Verb

1. To measure or record the time, duration, or rate of something.
2. To choose when something commences or its duration.

travel

Verb

1. To be on a journey, often for pleasure or business and with luggage; to go from one place to another.
2. To pass from one place to another; to move or transmit.

Noun

1. The act of traveling; passage from place to place.
2. A series of journeys.