The amount of money needed to buy or do something. chi phí
cost
Something you know well or have seen before. quen thuộc
familiar
An exciting and sometimes risky experience. cuộc phiêu lưu
adventure
To say you are unhappy or not satisfied about something. phàn nàn
complain
A vehicle that flies into space. tên lửa
rocket
Special qualities that make something or someone different. đặc điểm
characteristics
Easy to see or understand. rõ ràng
obvious
A large round object that moves around a star. hành tinh
planet
To use too much of something carelessly. lãng phí
waste
The red planet next to Earth. sao Hỏa
Mars
A tool used to see things far away in space. kính viễn vọng
telescope
The sun and the planets that move around it. hệ Mặt Trời
solar system
Objects used to do or fix something. dụng cụ
tools
A mountain that can release lava and smoke. núi lửa
volcano
A large round hole in the ground or on a planet’s surface. miệng núi lửa
crater
A vehicle used for traveling in space. tàu vũ trụ
spaceship
A person trained to travel in space. phi hành gia
astronaut
The planet where we live. Trái Đất
Earth
Something that cannot happen or be done. không thể
impossible
Covered with or full of fine dry dirt. đầy bụi
dusty
The invisible gas we breathe to stay alive. không khí
air
How hot or cold something is. nhiệt độ
temperature
Causing damage or pain. có hại
harmful
To travel to learn about a new place. khám phá
explore
The air you take in and let out from your lungs. hơi thở
breath
Special clothing that protects a person in space. bộ đồ phi hành gia
spacesuit