The Ultimate Travel Guide

This article may require cleanup to meet Wikipedia's quality standards. Please discuss this issue on the talk page or replace this tag with a more specific message. This article has been tagged since June 2007.

This article or section is missing citations and/or footnotes. This article or section contains insufficiently sourced phrases. Using inline citations helps guard against copyright violations and factual inaccuracies. You may improve the article or discuss this issue on its talk page. Help on using footnotes is available. This article has been tagged since December 2006.

Interstellar space travel is unmanned or manned travel between stars. The concept of interstellar travel in starships is a staple in science fiction. Interstellar travel is tremendously more difficult than interplanetary travel due to the vastly larger distances involved, and intergalactic travel more difficult yet.

As a practical goal, interstellar travel has been debated fiercely by various scientists, science fiction authors, hobbyists and enthusiasts.

Many scientific papers have been published about related concepts. Given sufficient travel time and engineering work, both unmanned and generational interstellar travel seem possible, though representing a very considerable technological and economic challenge unlikely to be met for some time, particularly for crewed probes. NASA has been engaging in research into these topics for several years, and has accumulated a number of theoretical approaches.

Cheap airline tickets, hotels, reviews, cars, cruises and vacations ...

Yahoo! Travel is a comprehensive online travel destination, where you can reserve cheap airline ... Search here for cheap airline tickets, hotels, cars, cruises and vacations

Read more...

Welcome to Travel.State.Gov

Information on all types of U.S. visas (travel, business, immigration, employment), travel abroad, consular posts and the monthly visa bulletin.

Read more...