1. Space travel: This is the most common use of the phrase. It's used to announce that a spacecraft has successfully touched down on a celestial body, like the moon or Mars.
2. Air travel: While less common than in space travel, "we have landed" is sometimes used to announce that a plane has safely arrived at its destination.
3. Metaphorically: The phrase can also be used metaphorically to describe reaching a destination, achieving a goal, or experiencing a significant change. For example, "After years of struggle, we have finally landed our dream job."
Examples:
* Space travel: "Houston, Tranquility Base here. The Eagle has landed." - Neil Armstrong, Apollo 11 Mission
* Air travel: "Ladies and gentlemen, this is your captain speaking. We have landed safely at [destination] airport. Please remain seated until the seatbelt sign is switched off."
* Metaphorically: "After a long and difficult journey, we have landed in a place of peace and contentment."
The specific meaning of "we have landed" depends on the context in which it's used.