space travel
Học thuậtThân thiện
Definition
Noun: - A voyage outside the Earth's atmosphere: The act or process of traveling through space, beyond the Earth's atmosphere, typically in a spacecraft.
Usage
The term "space travel" refers to the concept or activity of journeying through outer space. It is used to discuss the technological endeavor, historical missions, or future possibilities of human or robotic travel beyond Earth.
Examples
- The 20th century saw the dawn of space travel with the launch of Sputnik.
- Advances in rocket technology are making commercial space travel more feasible.
- The challenges of long-duration space travel include radiation exposure and life support.
Advanced Usage
- "The physics of space travel": Refers to the scientific principles governing motion and navigation in the vacuum of space.
- "The golden age of space travel": A phrase often used to describe a period of significant achievement and public enthusiasm for space exploration, such as the 1960s Apollo era.
Variants and Related Words
- Spaceflight (n): A synonym often used interchangeably with "space travel," sometimes specifying a particular journey or mission.
- The spaceflight lasted for six months.
- Astronautics (n): The science and technology of space travel and exploration.
- Interplanetary travel (n): Travel between planets within a solar system.
- Interstellar travel (n): Hypothetical travel between stars.
Synonyms
- Spaceflight: A journey through space.
- Space exploration: The investigation of physical conditions in space and on stars, planets, and other celestial bodies, which often involves travel.
Related Phrases
- Manned space travel: Space travel involving a human crew.
- Unmanned space travel: Space travel conducted by robotic spacecraft without a human crew.
- The future of space travel: A common phrase discussing prospective developments and goals in the field.
Noun
- a voyage outside the Earth's atmosphere