Category
page 1Interstellar travel
twin paradox
thought experiment in special relativity
solar sail
type of spacecraft propulsion that takes advantage of solar radiation
interstellar travel
term used for hypothetical crewed or uncrewed transport between star systems

faster-than-light
thumb|330x330px|Because the sphere travels faster than light, the observer sees nothing until it has already passed. Then, two images appear: one of the sphere arriving (on the right) and one of it departing (on the left).
Faster-than-light (superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed of light in vacuum (). The special theory of relativity implies that only particles with zero rest mass (i.e., photons) may travel at the speed of light, and that nothing may travel faster.
Alcubierre drive
hypothetical mode of transportation by warping space
Project Daedalus
study conducted by the British Interplanetary Society about a probe using a fusion rocket to reach Barnard’s Star
generation ship
interstellar spacecraft able to accommodate multiple generations of passengers

starship
thumb|upright=1.3|An updated version (NASA, 1999) of the Project Orion by the [[United States government (1958–1965). It was the earliest scaled project developing a concept for a spaceship with a propulsion, of fission pulses, that was to be capable to transport humans light years within hundreds of years instead of thousands.]]
Project Orion
nuclear explosion-powered spacecraft
intergalactic travel
The hypothetical travel that is crewed or uncrewed between galaxies
Bussard ramjet
spacecraft propulsion method that collects its fuel from interstellar dust.
Breakthrough Initiatives
set of programs to search for and communicate with extraterrestrial intelligence
sleeper ship
spacecraft with passengers put into suspended animation for long duration travel
stellar engine
theoretical megastructure
electric sail
proposed form of spacecraft propulsion using the dynamic pressure of the solar wind as a source of thrust
100 Year Starship
grant project to work toward achieving interstellar travel
interstellar ark
hypothetical spacecraft
interstellar probe
space probe that can travel out of the Solar System
embryo space colonization
method of space colonization using frozen embryos
Innovative Interstellar Explorer
proposed spacecraft intended to study the interstellar medium
black hole starship
an idea for enabling interstellar travel by propelling a starship using a black hole
IXS Enterprise
NASA conceptual interstellar ship
Project Lyra
feasibility study of space missions to interstellar objects
relativistic rocket
Type of spacecraft