orbit - move around a planet, rover - a small vehicle used by austronauts, radar - a system for finding objects, spacecraft - a space vehicle, surface - the flat top part of sth, escape - getting away of sth, breakthrough - important discovery, absent - not in a place, change your mind - make a different decision, robotics - the science of robots, extreme - very great, extreme sport - a dangerous sport, IT - information technology, what's on - τι συμβαινει, waterfront - part of town next to the sea, open-air - happening outdoors, gallery - a room for showing works of art, ground floor - the floor at the level of the ground, endangered - plants and animals in danger of extinction, stall - παγκος, beginner - amateur, exhibition - a show of paintings , gadget - a small machine,

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