Is it just me or does anyone else also think that our reality is just a high sophisticated computer simulation created and being observed by advanced extra terrestrial beings? As if our universe is just a high pixel computer screen for other advanced personages.

Please let me know about your opinions on this theory.

Thinking about the law of large numbers and probability, i wondered if, in a straight line, there had to be a celestial body at some point that crossed it. My initial idea was that yes, if we think the universe is infinite, at some point there would HAVE to be something crossing the line. However, i then thought about, for example, how Pi has infinite numbers yet no guarantee of any sort of string ever happening. Does that mean we can't guarantee that something must be in the line?

We still don’t know if any life exists beyond our planet. But if they exist and technologically more developed , a contact with them carries some existential risks. There are theories about what kind of behavior they could have and some are scary, like dark forest hypothesis.

What do you think? Can we survive a contact in such a universe?

Journey 5.7 billion light-years into the Phoenix Cluster to explore the most massive black hole ever discovered: Phoenix A*, with an estimated mass of 100 billion solar masses.

Sorry guys but I tried to calculate the density of ton 618 and i m not sure about my maths, so that’s what I did :

M ton618 = (66×10⁹)×(1,988×10³⁰) = 1,312×10⁴¹ kg

V ton618 = (4÷3)× pi ×(190×10⁹) = 2,87×10⁸⁷ km³

M÷V= 4 566 788,55 kg/km³

So the density of ton618 is around :

4,567×(10^-6) kg/L

Air density : 1,2754×(10^-3) kg/L

And I think that I failed something but I don’t know what.

(Please help and sorry I m in first year at high school) (I made all this with data from wikipedia so the result isn’t exact)

so. I have always heard that the universe is expanding faster than the speed of light. but today I learned that the velocity at which the speed is expanding increases with respect to time. So really the wxpnsion of the universe has constant accelration.

this constant acceleration value is 70 km/sec/ 3.26 million light years.Multiply that by 14 billion years and you get the speed at which the universe expands today to be about 300,000 km/s, or the speed of light.

so the universe expands at the speed of light?

am I missing something?

is this just a coincidence?

is my math wrong?

Everyone keeps asking if we are alone in this Universe, but isn't the answer way easier than we think? We know that the Universe is approximately 13.7 billion years old which means we can receive any signals in this range, so, given the fact we haven't received any it means we are truly alone, at least in the observable universe, but there's the unobservable one, so if there are other civilizations 14 billion light years away we still wouldn't hear from them for another 300 million years. For reference, the entire human lineage has existed for an average of 5 million years.

To the people reading this, you might just want to quit reading ahead because it's gonna be hell of a telltale. I've always stumbled upon a lot of questions but, amongst those questions a distinct question has perked my attention the most. The question is, "How did the Universe begin?". I would wager that humans know that everything has a "start", but do they really know how did the universe unfold itself? Some of you would blindly say "The Big Bang" and some "The God". For someone who's never been an atheist, I wouldn't completely agree that God plays an important role in the building up of the universe, because science says it all. Till now, I exquisitely believed that the universe started with The Big Bang, but what if there was something that had existed before The Big Bang? I've seen people come up to me and say "First, The Big Bang, then the initial state, then the cosmic inflation"- WOAH, my apologies, you're absurdly right, but have you ever imagined what must've been BEFORE The Big Bang? No? That's quite prophesied. The answer to the question "How did the Universe begin?" is beyond dispute. Even if someone asked you how was a lepton created, you'd be looped back to The Big Bang itself and then, the same question would arise endlessly. There are quite a few theoretical possibilities for the beginning of the universe - a quantum vacuum, the universe might've appeared from a high-energy vacuum state, which is scientifically not true ; a Big Bounce, some theories also suggest that our universe is a series of cycles, where a previous universe collapsed and then birthed our own through a "Big Bounce".

But, from a theistic perspective, the universe began as a deliberate, intentional act of creation by a divine being, bringing all matter, energy, space and time into existence from nothing. As someone who's aware of what's written in Bible, the Bible states that there are The Seven Days of Creation by The God :

Day 1: God created light and separated it from darkness.

Day 2 : God created the atmosphere, separating the elements.

Day 3 : God created vegetation.

I'm not even gonna write the whole Seven Days Of Creation because that is not what had caused the creation of our Universe. For the people who BELIEVE that The God has created this universe, I'd like to ask you a question, "Who created God?". A creator must have a creator itself, right? Something isn't extracted from nothing. People will say that no one created God, because it's an eternal being existing outside of time and space? I'm highly against the idea that God must've created the universe but will all due respect, I acclaim people's opinions on how the universe was created.

Rerouting to scientific inducements, let's focus on a few more possibilities. Have y'all ever heard about the "Nothing" Paradox? Scientific, yet controversial, theories suggest that the universe emerged from "nothing".

Also, the zero-energy universe hypothesis proposes that that the total amount of energy in the universe is zero, balancing positive mass with negative gravitational energy, this reinforces the "Nothing" Paradox. Apparently, I believe in the White Hole Theory, where The Big Bang was just a "white hole", an inverse black hole from a parent universe. Though mathematically possible, white holes remain theoretical and have never been observed. The last inducement in my opinion is the Simulation Theory. It states that our reality is a highly sophisticated computer simulation created by advanced extra terrestrial beings.

I think this question is highly controversial and can be viewed from various perspectives. Goodluck digging in for the actual arisen of our universe.That's it, goodnight mates.

so ive been thinking about this stuff whenever ive been bored for like the past couple years and i wanna know what in the world you guys think of this. let me know if you have anything to correct or to add-on to my theory here. or just let me know if im crazy.

so, my theory is that nothing can be infinite. infinity is not physically possible. everything has to have a start and an end. but, i think time doesnt have an end. as we know, black holes bend time. so if you imagine time as a plane, it will create a little dent in it. for the purpose of cleanly explaining this, lets imagine time as a line. as we know, time has to have a beginning and end, so a line perfectly represents this. but, i believe that this line is actually a circle. it goes around and it loops.
but you may be wondering, how in the world does that work? time doesnt go in a loop, right?
thats where we go back to the black hole thing. i believe there is a black hole so insanely big that it creates a dent in that circle so big that it pokes through to the other side. aka a wormhole. I believe the big bang is actually just a white hole. the whole universe ends with a black hole so giant that it sucks everything in, then everything is transported to the beginning of time, where its spit out, aka the big bang.

ive also heard things like this: "Theoretical physicists have proposed that an "anti-universe" running backward in time could exist, specifically appearing as a mirror image of our own prior to the Big Bang" This would be perfectly explained too. when we have that big wormhole in our circle, that means our circle is split in half. we are living on the time on one half of that circle, and the other half is exactly the opposite

We know that Andromeda and the Milky Way are going to collide in a few billion years even though de universe is expanding and most things (cosmological) are getting farther apart.

1-How much further (in percentual terms) would the Andromeda need to be in order for it to get "expanded away" from us, instead of we falling towards one another.

2- What happens to the Dark Matter currently sitting between the two Galaxies? Will it be pushed off to the sides, ou will it get squeezed into the union of "Milkdromeda"?