Outer Space: English Vocabulary List

the space outside the earth's atmosphere

"Outer space is vast."

"Outer space contains stars"

all that exists in the physical world, such as space, planets, galaxies, etc.

"The universe is very big."

"Scientists believe the universe is constantly expanding and contains billions of galaxies that we have not yet discovered."

any of the rocky bodies orbiting the sun, ranging greatly in diameter, also found in large numbers between Jupiter and Mars

"An asteroid flew past Earth."

"Scientists are tracking a large asteroid that is predicted to pass relatively close to Earth next year."

a large number of star systems bound together by gravitational force

"Our sun belongs to the Milky Way galaxy."

"The Andromeda Galaxy is on a collision course with our own"

the sun and the group of planets orbiting around it, including the earth

"Our solar system includes eight planets."

"The Voyager probes are now traveling beyond the boundaries of our solar system into interstellar space."

the 1st and smallest planet in the solar system which is the closest to the sun

"Mercury is a planet."

"Mercury is the closest planet to the Sun."

the 2nd planet of the solar system located between Mercury and earth

"Venus is bright."

"Venus is often seen in the evening sky."

the 4th planet of the solar system located between earth and Jupiter

"Mars is red."

"NASA has sent several robots to Mars to study its surface and search for evidence that liquid water once flowed on the red planet."

the 5th and the largest planet of the solar system located between Mars and Saturn

"Jupiter is huge."

"Jupiter is the largest planet in the solar system."

the 6th planet of the solar system located between Jupiter and Uranus, which has rings around it

"Saturn has rings."

"Saturn is famous for its rings."

the 7th planet of the solar system with a blue-green color located between Saturn and Neptune

"Uranus is distant."

"Uranus is an ice giant in our solar system."

the 8th planet of the solar system with a ring of icy particles around it

"Neptune is cold."

"Neptune is far from the Sun."

a branch of science that studies space, planets, etc.

"He developed a keen interest in astronomy early on."

"Radio astronomy allows scientists to observe celestial phenomena otherwise invisible."

a scientist who studies or observes planets, stars, and other happenings in the universe

"The astronomer discovered a new comet."

"The astronomer spent every clear night looking through the telescope hoping to discover a new comet or asteroid."

situated on the outside of something else

"The outer layer is red."

"The outer layer of the planet is made of gas and is thousands of miles thick."

the path an object in the space follows to move around a planet, star, etc.

"The moon orbits around Earth."

"The International Space Station completes one orbit around the Earth approximately every ninety minutes at high speed."

to move around a star, planet, or a large object in space

"Satellites orbit the Earth at high speed."

"The International Space Station orbits the Earth at an altitude of approximately two hundred fifty miles."

an object sent into space to travel around the earth and send or receive information

"The satellite sends data daily."

"A communication satellite was launched into orbit to improve television and internet signals across the entire country."

the process by which an aircraft leaves the ground and starts to fly

"Takeoff was delayed."

"The takeoff happened after the storm passed."

a vehicle designed to travel in space

"The spacecraft docked with the space station."

"An uncrewed spacecraft was launched to explore the methane lakes of a distant moon."

someone who travels into space, such as an astronaut

"The spaceman floated."

"The spaceman wore a helmet and oxygen pack."

a kind of spacecraft used by astronauts to explore in space

"The spaceship flew away."

"The spaceship launched from Earth and traveled for six months before finally reaching Mars and entering orbit around the red planet."

a large structure used as a long-term base for people to stay in space and conduct research

"The space station orbits Earth."

"Astronauts live and work on the space station."

clothing used by astronauts while traveling in space

"He wore a spacesuit today."

"Before stepping outside the spacecraft, the astronaut carefully put on his spacesuit to protect himself from the vacuum of space."

a period during which an astronaut moves outside an spacecraft in space, typically to perform repairs or experiments

"The spacewalk was dangerous."

"The spacewalk lasted several hours."

a piece of equipment by which the far objects, particularly those in space, are made clearly visible

"He looked at the stars through his telescope."

"The Hubble Space Telescope has provided breathtaking images of the distant universe."

a long journey taken on a ship or spacecraft

"The voyage lasted three months."

"A voyage is a long journey involving travel by sea or through outer space"

a creature that is believed to exist in other worlds or planets

"The alien appeared."

"People saw an alien in the story."

any area beyond the Earth's atmosphere

"There is space."

"Astronauts explore the vast expanse of space, encountering celestial wonders."

a place in the space with such high gravity that pulls in everything, even light

"A black hole pulls everything."

"Scientists recently captured the first image of a black hole, which confirmed many theories about how gravity works in space."

the 1st and smallest planet in the solar system which is the closest to the sun

"Mercury is hot."

"Mercury, the innermost planet, experiences extreme temperature fluctuations due to its proximity to the sun."

the act of an aircraft or spacecraft arriving on the ground or a solid surface

"The landing was smooth."

"The landing took place at night."

a spacecraft that moves up by the force of the gases produced when the fuel burns

"The rocket launched successfully into orbit."

"A multi-stage rocket is required to achieve the velocity needed to escape Earth's gravity."

to send an object, such as a satellite, missile, etc., into space

"They will launch the rocket."

"Scientists are preparing to launch the new satellite into the Earth's orbit next week."