Galaxy
A galaxy is a vast gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter, often containing billions of stars like our own Milky Way. In a broader sense, it can metaphorically describe a dazzling assembly of talented people or objects, highlighting the word's evolution from astronomical wonder to cultural shorthand for excellence in modern usage.
Did you know?
Astronomers estimate there are about 2 trillion galaxies in the observable universe, a figure revealed by the Hubble Space Telescope's deep field images in the 1990s, which means there could be more galaxies than grains of sand on all Earth's beaches combined. This vast number challenges our understanding of the cosmos and underscores the sheer scale of the universe we inhabit.
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