Macmillan Dictionary

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Parts of planets and stars

axis

noun

an imaginary line through the middle of an object such as a planet, round which it seems to spin

core

noun

the central part of a planet

corona

noun

the outer atmosphere of the Sun

crater

noun

a large round hole on the surface of a planet caused by a meteorite hitting the surface

magnitude

noun

the brightness of a star, shown as a number

sunspot

noun

a dark area on the surface of the sun

charticle

a news article that consists of a chart … and only has a small amount of text

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Word of the Day

tweet

the short high sound that a small bird makes

Open Dictionary

never event

an event that should never occur in a healthcare setting …

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