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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