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Astronomy

Horizontales
A gravitationally bound system of stars, gas, and dust
The increase in average distance between galaxies over time
The spinning of an object around its axis
A gigantic region of space in which clusters of galaxies are tightly packed
An object that orbits a planet
A relatively small and ice-rich object that orbits star
Verticales
An object that orbits a star
The orbital motion of one object around another due to gravity
A relatively small and rocky object that orbits a star
A large glowing ball of gas that generates heat and light through nuclear fusion in its core
The total sum of all matter and energy