Interstellar travel is the term used for hypothetical manned or unmanned travel between stars. Interstellar travel will be much more difficult than interplanetary spaceflight; the distances between the planets in the Solar System are less than 30 astronomical units (AU)—whereas the distances between stars are typically hundreds of thousands of AU, and usually expressed in light-years. Because of the vastness of those distances, interstellar travel would require either great speed, a high percentage of the speed of light, or huge travel time, lasting from decades to millennia or longer.
The speeds required for interstellar travel in a human lifetime far exceed what current methods of spacecraft propulsion can provide. Even with a hypothetically perfectly efficient propulsion system, the kinetic energy corresponding to those speeds is enormous by today’s standards of energy production. Moreover, collisions by the spacecraft with cosmic dust and gas can produce very dangerous effects both to passengers and the spacecraft itself.
A number of strategies have been proposed to deal with these problems, ranging from giant arks that would carry entire societies and ecosystems, to microscopic space probes. Many different spacecraft propulsion systems have been proposed to give spacecraft the required speeds, including nuclear propulsion, beam-powered propulsion, and methods based on speculative physics.
For both manned and unmanned interstellar travel, considerable technological and economic challenges need to be met. Even the most optimistic views about interstellar travel see it as only being feasible decades from now—the more common view is that it is a century or more away. However, in spite of the challenges, if interstellar travel should ever be realized, then a wide range of scientific benefits can be expected.
Interstellar travel, https://en.wikipedia.org/w/index.php?title=Interstellar_travel&oldid=699874685 (last visited Jan. 19, 2016).
01.Kromestar featuring Team Starfleet – Outer Limit [Cosmic Bridge Records]
02.Goth Trad – New Epoch [Deep Medi Musik]
03.Greymatter – Too Much (Klic Remix) [Unique Uncut Records]
04.Mønic – Blood Hound [Osiris Musik Uk]
05.Jafu – Fever [Deep Heads]
06.Kryptic Minds – Convoluted [Tectonic Recordings]
07.D1 – Sub Zero [Hessle Audio]
08.Kahn – Badman City (ft Flowdan) [Black Box Records]
09.EPROM – Can Control [Rwina Records]
10.Egyptrixx – A/B Til Infinity [Night Slugs]
11.Danny Scrilla – VV Cephei (Kidkanevil remix) [Cosmic Bridge Records]
12.Unknown – Higher
13.Lewis James – Worse [Original Cultures]
14.Kode9 – Zero Work [Hyperdub]
15.Doshy – Shunt [Robox-Neotech]
16.Joker – Boss Mode [Kapsize Recordings]
17.Kromestar – Rhythm On My Mind [Cosmic Bridge Records]
18.JASE – The Claim [Robox-Neotech]
19.Om Unit & Lorn – Obsidian [Cosmic Bridge Records & Lorn]
20.Floating Points – Argente [Pluto Records]
21.Sicaa – Frantic [Exploration Music]
22.FilosofischeStilte & Mad Fellow – Upfront [Saturate!Records]
23.Commodo, Gantz, Kahn – Bitchcraft [Deep Medi Musik]
24.Roots Manuva – Facety-2-11 [Big Dada]
25.Two Fingers & Noisia – Salah [Division Recordings]
26.ONHELL – Dark Skin [STYLSS]