All existing matter and space considered as a whole; the cosmos.
The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies; it has been expanding since its creation in the Big Bang about 13 billion years ago.
What is the the cosmos?
Cosmos, in astronomy, the entire physical universe considered as a unified whole (from the Greek kosmos, meaning “order,” “harmony,” and “the world”). Humanity's growing understanding of all the objects and phenomena within the cosmic system is explained in the article universe.
Why is it called the cosmos?
Cosmos is originally a Greek word, meaning both "order" and "world," because the ancient Greeks thought that the world was perfectly harmonious and impeccably put in order. We now use cosmos without the idea of perfect order.
To learn more about Cosmos, refer
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