A flyby is a quick look at something. Sometimes astronauts will fly by Earth to take pictures or to measure how fast the planet is moving.
A submarine is a boat that is designed to go under the water. It is usually made of metal and has a number of different chambers that it can use to stay underwater.
A geyser is a fountain or spout of water that erupts from the ground. They are usually located in hot, dry areas, and they are usually named for the location where they are found.
Exoplanets are planets that are not located in our own solar system. They are usually found by using a telescope to look for signs of life.
A starship is a large vehicle that is used for space travel. They are usually divided into different sections, including the engine room, the bridge, and the living quarters.
To say that something is cushy is to describe it as comfortable or pleasant. cushy is often used to describe things like seats, beds, or chairs.
Unforgiving means that you are not willing to forgive someone. If someone is unforgiving, they are likely to hold a grudge against that person and to never forgive them.
A backhoe is a type of machine that is used to dig holes in the ground. Backhoes are often used to build roads, dig trenches, and remove rocks.