Interstellar travel is the ability to travel between stars in the exploration of space. In science fiction, interstellar travel is often depicted as faster-than-light, such as warp drive on "Star Trek" or light speed in "Star Wars," but research is underway to build robotic probes for Alpha Centauri (as in the Breakthrough Starshot project), and to develop hibernation systems, generation ships and other long-duration space technology needed to one day send astronauts to other stars. Learn more about interstellar travel and technology.
Bizarre flashes of cosmic light may actually be generated by advanced alien civilizations, as a way to accelerate interstellar spacecraft to tremendous speeds, a new study suggests.
The discovery of seven Earth-size planets around a nearby star, TRAPPIST-1, is certainly exciting news. But what would it take to visit one of these potentially Earth-like alien worlds?
Could we actually warp and bend space-time to make a convenient tunnel, making all our galactic dreams come true? Short answer: not likely.
New Hubble observations of the interstellar medium could shed light on the challenges that future missions dispatched to the nearest stars might face, researchers say.
Famed production designer Guy Hendrix Dyas discusses the incredible starship design for the film "Passengers" (2016).
A theoretical device that sounds like something out of "Star Trek" could help to turn marginally habitable planets into rich environments capable of hosting microbes, a new paper argues.
As speculation about a possible Earth-like exoplanet around our sun's nearest neighbor reaches fever pitch, the European Southern Observatory says there will be an announcement on Wednesday.
All of the books ever written, the genetic blueprint for human life and much of the other information that defines us as a species could soon be riding laser beams toward faraway exoplanets.
Here are the biggest challenges Stephen Hawking and others on the Breakthrough Starshot team will have to overcome to make interstellar spaceflight a reality.
Laser-propelled probes designed to search for signs of life around nearby stars will also likely hunt for aliens on Saturn's moon Enceladus and other objects within Earth's own solar system.
Postage-stamp-sized space probes could make a flyby of planets around Alpha Centauri within 20 years after launch.