The universe - A vast area contains galaxies, stars and solar systems, astromomy - the study of the universe, moon - an object that revolves around a planet, comet - made of frozen gases, rocks and dust, Hubble’s Law - Galaxies are moving away from each other, the universe is expanding, The singularity - when the whole universities existed in a single zone, The Big Bang - when the singularity expanded, stars - luminous objects, produce their own light and heat, galaxy - a collection of millions of stars, our galaxy - the milky way, planet - orbits a sun, is round, can clear its neighbourhood of other objects, planetoid - a dwarf planet, asteroid - small rocky structures with no air or atmosphere, meteors - very small asteroids (10m), Phases of the moon - changes in the moons appearance , lunar eclipse - when the earth is between the sun and the moon, solar eclipse - when the moon is between the sun and the earth, umbra - a complete shadow, penumbra - a partial shadow,
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Earth and Space terms
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Siobhancoughlan
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