太空旅行的英语怎么说?

太空旅行在英语中被称为"space travel"。来源于英语中的词组 "space" (太空) 和 "travel" (旅行)。

例句：

"Space travel is becoming more and more common in the 21st century." (太空旅行在21世纪变得越来越普遍)

"The future of space travel looks bright, with more and more private companies investing in the field." (未来的太空旅行前景光明，越来越多的私人公司在该领域进行投资)

"He dreams of going on a space travel one day." (他梦想有一天能去太空旅行)