universe - (n) all space, including all the stars and planets, rotate - (v) to turn with a circular movement around a central point, or to make something do this, phase - (n) one of the stages of a process of development or change, civilization - (n) the society, culture, and way of life of a particular area, orb - (n) a spherical body; a globe, temperature - (n) a measure of how hot or cold a place or thing is, chemical reaction - (n) a natural process in which the atoms of chemicals mix and arrange themselves differently to form new substances, radiate - (v) the light or heat is sent out in all directions, wavelength - (n) the size of a radio wave used to broadcast a radio signal, absorb - (v) to take in liquid, gas, or another substance from the surface or space around something, infrared waves - (n) Waves that are longer than visible light waves, ultraviolet waves - (n) Waves have frequencies slightly higher than visible light; can damage skin --> UVA - ultraviolet A radiation UVB - ultraviolet B radiation, gamma rays - (n) a type of electromagnetic radiation that has a shorter wavelength and higher energy than X-rays., swell - (v) to become larger and rounder than normal, inflame - (v) cause inflammation in a part of the body, sunscreen - (n) a cream or oil that you rub into your skin to stop the sun from burning you, tanning bed - (n) a structure like a bed containing a device for producing light, which you lie on in order to make the skin go darker, sphere - (n) a ball shape, tilt - (v) to move or make something move into a position where one side is higher than the other, axis - (n) an imaginary line about which a planet rotates, orbit - (n) the curved path travelled by an object which is moving around another much larger object such as the Earth, the Sun etc, gravity - (n) a force that pulls items to the center of the earth, sideways - to or towards one side,

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