1. The Journey Ahead...

By Abinau November 14, 2022

The Beginning ...

Hey there!

This is my first blog and it's all about what this blog is for. you obviously must have read that big bold title

"Astrophysics: The unfathomable"

and thought that this was some sciencey stuff that you won't understand but it's quite the opposite. Maybe. sort of.

well anyways, before I start to explain all this madness I would like to take a moment to thank you for checking out this blog.

now that we got the formal bit out of the way let's get into the main content.

Remember when I said that you'd have seen this blog and you'd have thought that this blog will be all sciency and that You won't understand it? yeah, you're sort of right and sort of not. I have to admit that this blog, obviously is going to be sciencey and advanced and stuff like that but I assure you that you're gonna understand it. I swear.

The whole point of this blog is to simplify and deliver the concept of space science to my audience. Basically, this is an "in a nutshell" sort of blog, but a fun one.

Check out my next blog for the actual first blog of this channel.

You're gonna love it.

(or not, I don't read minds)

Enjoy!😄

2. The true beginning...

By Abinau November 13, 2022

The origin as we know it....

We all know about the origin of the universe. Right?

Well here's a refresher:-

In sciencey complicated terms the Big Bang theory is the prevailing cosmological description of the development of the universe. According to estimation of this theory, space and time emerged together 13.799±0.021 billion years ago and the energy and matter initially present have become less dense as the universe expanded.

Let's simplify that a bit:-

Long Long ago (about 13.7 billion years to be precise) there was nothing. (That was a bit anti-climatic) When there was just nothing and nowhere, a single spark of hope for life appeared in the form of a random fluctuation in the completely dull and empty void. Then, all of a sudden, A whole universe exploded out of that single cosmic spark. This phenomenon is called the big bang and is the reason of the existence of our universe.

Or is it?

Many astronomers and scientists refused to believe that we were the result of a cosmic fluke, and peiced together the pieces and evidence in a different way.

Let's see some of the other theories:-

➼ Eternal Inflation theory

After the Big Bang, the universe expanded rapidly during a brief period called Inflation. The Eternal Inflation theory proposes that the inflation never stopped, and has been going on for an infinite length of time. Somewhere, even now, new universes are coming into existence in a vast complex called the multiverse. Those many universes could have different physical laws.

➼ The Big Bounce

The Oscillating model of the universe involved an endless series of Big Bangs, followed by Big Crunches that restarted the cycle, endlessly. Hence forming the Big Bounce. This is a interesting model of the universe as it predicts not only the beginning but also the ending. The big crunch is the theory that prdicts that the universe, like a giant rubber band, will stretch as much as it can and will eventually rebound and reverse the process of the big bang and will crush all the contents of the universe back into a singular point. The modern version of this model also involves colliding "branes" (a "membrane" within a higher-dimensional volume called the "bulk").

➼ The Steady State Universe

One alternative theory worth mentioning is the Steady State universe. An early rival to the Big Bang theory, Steady State posits continuous creation of matter throughout the universe to explain its apparent expansion. This type of universe would be infinite, with no beginning or end. However, a mountain of evidence found since the mid-1960s indicates that this theory is not correct.

Even though we have a lot of theories on the origin of the universe Implications found in quantum gravity and string theory tantalizingly suggest a universe that is in reality nothing like how it appears to human observers. It may actually be a flat hologram projected onto the surface of a sphere, for example. Or it could be a completely digital simulation running in a vast computer. so in truth we may never know the complete truth.

Thank you for reading my blog.

I hope you enjoyed it.😄

3. How far is the End....

By Abinau November 12, 2022

Or is it the beggining...

The theory for the beginning is good enough but what about the end?

afterall boundaries are important, aren't they? So what is there at the boundary of our spectacular and mysterious universe?

Well, the simple and obvious answer is "Nothing". But is that all? Does our vast universe just end in a litteral cliff-hanger? This simple topic is teeming with questions (if you know where to look, you'll find even more😉). Now comes the part with the simplified complicated answers.

The Big Bang (Or something else) Isn't over yet.

Despite what you might think the universe isn't complete, not yet. But it is still expanding, faster than you would have ever expected (this is a proof that a big rip can occur). In fact The speed of the expansion of our universe is 68 Km/s per megaparsec. A parsec is 3.26 million light-years, while a megaparsec is a million parsecs. For every megaparsec travelled by the edge of our universe you add 68 km/s to its velocity.

And as our observeble universe has a diameter of about 28.5 gigaparsecs ( 1 giga parsec = 1 billion parsecs) it has long crossed the speed of light, considering that it only takes 4000-ish parsecs (I've done the math, trust me) to travel at the speed of light.

The cosmic speed limit is crossed.

Now, enough with the numbers, lets get to the facts and the reasoning behind them.

we all were taught that nothing could pass the speed of light. so how did the edge of the universe cross this speed limit? well, I have a theory that what we were taught was technically true! Nothing can pass the speed of light, except... the very fabric of reality!

Back to Square one.

so, lets go back to square one, literally.

we accepted that however shaky the theory of the big bang may be, the universe definitely "Expanded into being" (there are theories that say otherwise but the general proof points towards this approach). well, if matter could be "expelled" or "dispersed" then it should be able to be "carried along". And that's exactly whats happening! Whole clusters of galaxies are being carried away farther and farther from us, and most of them are travelling at or over the speed of light this is where "The theory" comes in. it's not light, matter or Light matter that is traveling faster than 299,792,458 m/s it is the "SPACE TIME CONTINUEM" itself. Otherwise known as the "fabric of space and reality", this is the literal base of the universe. And we're just at the tip of the ice berg!

So what is there at the edge of the universe? what happens when we go faster than light? How DO we know that galaxies are moving faster than the speed of light? what is this so called "NOTHINGNESS" that perfectly makes no sence? and the biggest question of all:- what do we do with all this information?

I guess you'll have to wait till the next post.