the observable universe is 93 billion light years in diameter or 879,847,933,710,000,000,000,000 (879.84 sextillion) kilometers.
that means that the observable universe is nearly 900 SEPTILLION meters wide, or for anyone who doesn't know these types of numbers it's 900 trillion trillion
that's the amount of water molecules in 28-29 liters of water, and them molecules are rly tiny
so yeah space is pretty big