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, around 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

cyberloafing

using the Internet where you work, during working hours, for activities which are not work-related

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Word of the Day

neutrino

a particle that is smaller than an atom and has no electrical charge

Open Dictionary

show a bit of ankle

… to reveal a small part of your intentions in order to attract support, without actually committing yourself to doing anything

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