How big is the universe? Really, really, really (a lot of really but I’m not going to write that) big! So thence can’t just use miles or kilometers to measure the universe. No one will read that. So then how is the universe measured? Well, there are a bunch of measurements you can use. Let’s start with the Astronomical Unit. The length of an astronomical fit is 92,255 miles. Or the distance from Earth to the Sun. But Astronomical Unit is a mouthful. So you can call it AU for short. Don’t get AU confused with gold. Then, there is the light-year. The light-year is NOT a unit of time. It is a unit of distance. The light year is yes, equal to the distance light travels in a year. But there is also a third one. The parsec. Well, let’s start with its distance. The parsec is = 30.86 trillion km. There are also kilo parsecs which equal a thousand parsecs and megaparsecs which equals a million parsecs! There is Gigaparsec equals 1 billion parsecs. , etc: You can also use powers of 10 and more! So how long is the observable universe? In Astronomical units, it’s 5881420168840000 AU. In light years it's 93 billion lightyears. in parsecs, it’s about 28.5 gigaparsecs. Maybe you will create a unit to measure the universe. Stay tuned for my next blog.
Gigaparsec , Unbelievably big !! another cool information from cool writer!
Wow! This is so cool :) rly smart writing style and writer too!