Solar System - 1016m
The Sun and its family of planets, moons, and other celestial bodies, stretching across ~1 light-year.
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Local Neighbourhood - 1017m
Local area surrounding the Sun which includes nearby stars and planets.
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Orion Nebula - 1018m
A stellar nursery in the Orion constellation, where young stars form from collapsing clouds of gas and dust.
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Orion Arm Width - 1019m
The approximate span of the Orion Arm, a minor spiral arm of the Milky Way containing our Solar System.
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Milky Way Centre Distance - 1020m
The heart of the Milky Way, housing a supermassive black hole, Sagittarius A*, surrounded by dense star clusters.
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Milky Way - 1021m
Our galaxy, a barred spiral structure with hundreds of billions of stars, spanning ~100,000 light-years.
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