1 - The Universe, 2 - Galaxy (a massive collection of stars, black holes, planets etc.), 3 - Nebula (a cloud of hydrogen gas and dust that can form stars and solar systems), 4 - Solar system (the space around a star (or pair of stars) that is influenced by its gravity), 5 - Red giant or super red giant star (when a star is nearing the end of its life it forms one of these), 6 - Main sequence star (most stars during their life times), 7 - Planet (collection of materials that form a large sphere which orbits a star, either gassy or 'rocky'), 8 - Dwarf planet (forms a sphere, orbits a star, but too small to clear debris from its orbit), 9 - Moon (natural satellite that orbits a planet, some can be larger than dwarf planets), 10 - Asteroids (left over rocks that orbit the Sun but are not large enough to become circular. Some are only a few km across), 11 - Comets (icy rocks with tails of gas and ice that orbit a star, usually in elliptical orbits), 12 - Artificial satellite (e.g. used for monitoring, communication, or navigation),

Things in space - order from largest (1) down to smallest (12)

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