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Planets, stars and other objects in space

antimatter

noun

particles (=the smallest pieces that make up all substances) that are the exact opposites of all the particles in the universe

asteroid

noun

a mass of rock that moves around in space. Most asteroids are found between the planets Jupiter and Mars, a region of space known as the asteroid belt.

the Big Dipper

the constellation (=group of stars) called the plough

black hole

noun

an area in outer space where the force of gravity is so strong that light and everything else around it is pulled into it

celestial object

noun

something in space, such as a star or planet

cluster

noun

a lot of stars that are close to each other

comet

noun

a bright object in space that has a tail of gas and dust

constellation

noun

a group of stars that form a particular pattern in the sky. Most of the constellations we know have been given names, for example Orion the Hunter and the Great Bear.

cosmic dust

noun

extremely small pieces of matter found in space, often in clouds

dark matter

noun

a substance that scientists think exists out in space, but for which they have no direct proof

dwarf

noun

a very small star that does not shine brightly

Earth

noun

the planet on which we live

falling star

noun

a shooting star

galaxy

noun

an extremely large group of stars and planets

the Galaxy

noun

the large group of stars and planets that the Earth and our sun are part of

gas giant

noun

a large planet such as Jupiter or Saturn that consists mainly of hydrogen and helium

heavenly body

noun

a star, planet, or moon

lodestar

noun

the north star

meteor

noun

a large piece of rock from space that passes into the Earth’s atmosphere and appears as a bright light in the sky

the Milky Way

the group of planets and stars that the Earth belongs to and that you can see at night as a band of pale light across the sky

the moon

noun

the object similar to a planet that goes round the Earth and that you can see shining in the sky at night

moon

noun

an object similar to a planet that goes round another planet

nebula

noun

a very large cloud of dust and gas that exists in outer space

the North Star

the bright star that you can see almost directly over the north pole

nova

noun

a star that unexpectedly becomes very bright and then returns to its normal brightness over a period of months or years

orb

noun

the sun or the moon

planet

noun

a very large round object that moves around the Sun or another star

the Plough

a group of seven bright stars that you can only see in the northern part of the world. The American name is the Big Dipper.

plow

the American spelling of plough

pulsar

noun

a type of star in space that produces a regular radio signal

quasar

noun

a very bright object in space that looks like a star and produces a lot of energy

red giant

noun

a very big red star

satellite

noun

a natural object such as a moon that moves around a planet

shooting star

noun

a meteor that makes a line of light as it falls through the sky

solar system

noun

a star and the planets that go round it, especially the Sun and the group of planets that includes the Earth

star

noun

a very large hot ball of gas that appears as a small bright light in the sky at night

the Sun

noun

the star in the sky that provides light and warmth to the Earth

sun

noun

any very bright star, especially one that a planet travels round

supernova

noun

an exploding star that produces an extremely bright light

white dwarf

noun

a star that does not shine very brightly and is at the end of its life

world

noun

any other planet

Word of the Day

stargazer

someone who studies the stars

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