Radience

Space, Sun and Moon

Science

astronomy

the study of all things in space, like the Sun, stars, and planets
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axis

the imaginary line around which Earth rotates, it runs through Earth from pole to pole
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crater

a large pit on Earth or any object in space, created by an impact from a smaller object
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electromagnetic spectrum

all the wavelengths or frequencies of electromagnetic radiation
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equinox

the two days a year when the Sun is directly over the equator, making day and night equal
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gravity

the attractive force between all objects that have mass
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lunar eclipse

occurs when Earth’s shadow falls on the moon
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maria

dark, flat regions on the Moon made of ancient lava flows
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moon phase

changes in the shape of the moon as seen from Earth
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observatory

a building that contains one or more telescopes used to observe space
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orbit

the path of one body around another, like Earth’s orbit around the Sun
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penumbra

a region of lighter shadow around the darkest part of a shadow
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radio telescope

a device that detects and records radio waves from space
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reflecting telescope

a telescope that uses concave mirrors to reflect and focus light from distant objects
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refracting telescope

a telescope that uses convex lenses to focus light from distant objects
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revolution

the motion of one body around another, like the Earth around the Sun
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rocket

a device that burns fuel, and expels gas in one direction to move in the opposite direction
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rotation

the turning of a planet on its axis
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satellite

an object that moves around a larger object in space, like the moon around Earth
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solar eclipse

occurs when the moon’s shadow falls on Earth
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space probe

a spacecraft that carries scientific instruments, but no human crew
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space shuttle

a reusable craft that can carry crew and cargo between Earth and space
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space station

an artificial satellite on which people can live and work for long periods
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telescope

a device that makes distant objects appear closer
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thrust

the pushing force exerted by the engine of an aircraft or rocket
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umbra

the darkest part of a shadow
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