A Light-year - A unit of astronomical distance equivalent to the distance that light travels in one year, Mass - A measure of how much matter there is in an object,, Weight - Is a measure of the size of the pull of gravity on the object., Comet - Is an icy, small Solar System body, Asteroid - A small rocky body orbiting the sun, Telescopes - Used for seeing up into space from earth, Space probes - Are used for being sent up into space to study scape, Satellite - An artificial body put up in space to communicate or collect data about space, Artificial Satellite - A satellite humans put up in space for example the ISS, Natural Satellite - A satellite that humans didn’t put up there for example an asteroid., Equinox - The time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of approximately equal length, Solstice - The longest and shortest days of the year,

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