Answer:
The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then expanded over the next 13.8 billion years to the cosmos that we know today
Explanation:
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[tex]\huge\purple{Hi!}[/tex]
The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now—and it is still stretching.
