Question

how many people are there in the whole universe

Answer 1

Answer:

There are approximately 7.8 billion people in the world as of July 2020, according to a 2020 report published in the journal The Lancet.

Answer 2

Answer:

7.8 billion

By 1800, however, the world population passed the 1 billion mark and has since continued to grow to its current 7.8 billion (our most recent estimate as of 2020).