9781422276044

mining activity of locating natural resources present below the ground navigation the science of directing the course of a vehicle obstacle an obstruction or hindrance in the pathway payload a part of cargo that is carried to space pharmacy a store where lots of medicines are stored phobia a fear of something pneumatic to use air as a source of energy or power programmable able to be given instructions to do a task prosthetic an artificial body part R&D research and development in a particular field radioactive a substance that emits radiations rechargeable something that can be charged again and again reliable something that is trustworthy and can be relied on rescue to save from danger resemble to look similar to some other object or a person rover a space shuttle that can move on the surface and explore sensor a mechanical device that is sensitive to some signal and helps in responding to it space shuttle a space vehicle that is used to travel to outer space strengthen to make stronger or provide strength surgeon a doctor who carries out a surgery or operation on any body part terrain a piece of land or a geographically bound area unemployment people who are not employed or do not have any work to do unmanned mission a mission to space that does not carry a human being to space welding industrial process of joining metal parts by heating, compressing or hammering

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