The Astronomy and Physics thread. And things of the like.

[Bard]

Re: The Astronomy and Physics thread. And things of the like.



Very cool. Jupiter and Europa on the Webb!

Recommend zooming in on Jupiter. Can see one of two things, 1) asteroids 2) objects so bright the telescope couldn't process it

Either way, pretty cool!

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[PVarck31]

Re: The Astronomy and Physics thread. And things of the like.

If every dot on these pictures is a galaxy full of planets, it’s almost a certainty there’s another place like ours. Imagine if we saw a civilization from these images peering back in time... the next great quest would be how do we get there, communicate, etc? It’ll never be enough to just know. Answers will beget more questions. Forever. That’s exciting but also kinda of a letdown that even if we know, we don’t KNOW. That perpetual chase is what keeps people going though.

What sucks is we will never get there. And there would be no way for two way communication. The distances are just too far. Our fastest spacecraft would still take us 18,000 years to get to Proxima Centauri, the closest star to us which is only 4 light years away. However, if there is life on Proxima b, it would only take eight years for two way communication. But it's doubtful that life can exist on that planet. But not impossible. Just probably not intelligent life. But that planet, as much as it seems to have Earth like similarities, is probably tidally locked and too hot on the side facing it's star, and too cold on the back. Although, there is the terminator line in between that could potentially support life. There is also another theory that if the planet has an ocean, it could distribute the heat and cold around the planet with currents possibly evening out the temperature. But then again, we don't even know if the planet has an atmosphere. But we should find out soon with Webb.

[PVarck31]

Re: The Astronomy and Physics thread. And things of the like.

[Blzer]

Re: The Astronomy and Physics thread. And things of the like.

What sucks is we will never get there. And there would be no way for two way communication. The distances are just too far. Our fastest spacecraft would still take us 18,000 years to get to Proxima Centauri, the closest star to us which is only 4 light years away. However, if there is life on Proxima b, it would only take eight years for two way communication.

I know Interstellar is science-fiction, but given its premise being similar to what we're attempting to achieve, clearly the only answer to making any of this possible is via wormholes.

[slickdtc]

Re: The Astronomy and Physics thread. And things of the like.

What are we looking at here? What’s that at the center of that spiral?

Breathtaking. It reminds me of a neural network which... yeah, you can build upon that thought to say everything that ever was is connected in some way. Which starts to make me think of the whole connected consciousness thing.

Really gets the brain humming!

I assume the answer is yes, but are they using any type of AI to scour these images or run simulations or something to kinda drill down further then just the images were seeing?

[Bard]

Re: The Astronomy and Physics thread. And things of the like.

What are we looking at here? What’s that at the center of that spiral?

Breathtaking. It reminds me of a neural network which... yeah, you can build upon that thought to say everything that ever was is connected in some way. Which starts to make me think of the whole connected consciousness thing.

Really gets the brain humming!

I assume the answer is yes, but are they using any type of AI to scour these images or run simulations or something to kinda drill down further then just the images were seeing?

That is a Phantom Galaxy that is about 32 million light years away.

This one is pretty famous due to the black hole in the middle of it, but what we are seeing is basically dust lanes that are lining up perfectly.

A lot of people are saying that this looks like a wormhole, which is pretty funny.

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[PVarck31]

Re: The Astronomy and Physics thread. And things of the like.

Here is the same galaxy as seen by Hubble. Just unreal how much more we can see in the infrared

[PVarck31]

Re: The Astronomy and Physics thread. And things of the like.

JWST will be looking at TRAPPIST-1e soon, which seems to have the most potential to be habitable out of the seven rocky planets in the system. It will look for biosignatures. Mainly looking to see if the planet has an atmosphere and whether or not there is water vapor in it, along with spectroscopy to see the elements. We are looking for oxygen and methane as a start.

The only thing that worries me about this system, is the star is a red dwarf, which are known to flare and bombard it's planets with radiation that could either destroy a planets atmosphere, or not even allow one of it's planets to have one. also, is this planet tidally locked. If so, that decreases the chance of habitability.

It would kinda suck if TRAPPIST-1's planets were all barren.

[Bard]

Re: The Astronomy and Physics thread. And things of the like.

The whole thing with red dwarfs, though, is that we do not know when they began the process quite accurately yet.

They can still last ~trillions of years until their last hydrogen supply is gone. So, the planets could absolutely be barren, or not quite yet. Such a crapshoot!

I am very giddy about the potential of that system, as it is our best bet (this far) of potentially finding some kind of life. That's beyond exciting.

Hopefully we can start seeing TRAPPIST-1e clearly. It has a lot of potential that I can't wait to hear about (and hopefully see).

The JWST has been so amazing. All the classic shots of the Hubble. It's like taking grainy black and white movies and being able to see them in 4K UHD.

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[PVarck31]

Re: The Astronomy and Physics thread. And things of the like.

The whole thing with red dwarfs, though, is that we do not know when they began the process quite accurately yet.

They can still last ~trillions of years until their last hydrogen supply is gone. So, the planets could absolutely be barren, or not quite yet. Such a crapshoot!

I am very giddy about the potential of that system, as it is our best bet (this far) of potentially finding some kind of life. That's beyond exciting.

Hopefully we can start seeing TRAPPIST-1e clearly. It has a lot of potential that I can't wait to hear about (and hopefully see).

The JWST has been so amazing. All the classic shots of the Hubble. It's like taking grainy black and white movies and being able to see them in 4K UHD.

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Red Dwarf's are so interesting. What's crazy to think about is that in all likelihood, not a single one has died yet no matter how long ago it formed.

We are finding ones that seem to be much more stable than others as far as flaring. So that's encouraging. While they are by far the most common type of star in the universe, that doesn't mean there aren't many sun-like stars. There are a lot. Billions and billions I'm sure. And more habitable stars than our own are out there that live longer and give off less UV light. J-Type and F-Type stars are similar to our G-type star but because of a lot of factors, living longer being the most important, these stars may be our best bet to find life.

And to your point, it is cool to think about where at in the process all these stars and planets are. It wasn't until around when Earth was 2.5B years old that we even had free oxygen. I'm pretty sure that's the time frame, but I could be off. We are in a very young universe. We could be one of the first living beings. Or hell, there could have been billions of civilizations that have come and gone. And billions more to come and go. The fact is, all the ingredients for life are everywhere. It would be pretty odd if we were alone. Basically a statistical impossibility.

[Bard]

Re: The Astronomy and Physics thread. And things of the like.

Red Dwarf's are so interesting. What's crazy to think about is that in all likelihood, not a single one has died yet no matter how long ago it formed.

We are finding ones that seem to be much more stable than others as far as flaring. So that's encouraging. While they are by far the most common type of star in the universe, that doesn't mean there aren't many sun-like stars. There are a lot. Billions and billions I'm sure. And more habitable stars than our own are out there that live longer and give off less UV light. J-Type and F-Type stars are similar to our G-type star but because of a lot of factors, living longer being the most important, these stars may be our best bet to find life.

And to your point, it is cool to think about where at in the process all these stars and planets are. It wasn't until around when Earth was 2.5B years old that we even had free oxygen. I'm pretty sure that's the time frame, but I could be off. We are in a very young universe. We could be one of the first living beings. Or hell, there could have been billions of civilizations that have come and gone. And billions more to come and go. The fact is, all the ingredients for life are everywhere. It would be pretty odd if we were alone. Basically a statistical impossibility.

Red Dwarf's are so interesting. What's crazy to think about is that in all likelihood, not a single one has died yet no matter how long ago it formed.

We are finding ones that seem to be much more stable than others as far as flaring. So that's encouraging. While they are by far the most common type of star in the universe, that doesn't mean there aren't many sun-like stars. There are a lot. Billions and billions I'm sure. And more habitable stars than our own are out there that live longer and give off less UV light. J-Type and F-Type stars are similar to our G-type star but because of a lot of factors, living longer being the most important, these stars may be our best bet to find life.

And to your point, it is cool to think about where at in the process all these stars and planets are. It wasn't until around when Earth was 2.5B years old that we even had free oxygen. I'm pretty sure that's the time frame, but I could be off. We are in a very young universe. We could be one of the first living beings. Or hell, there could have been billions of civilizations that have come and gone. And billions more to come and go. The fact is, all the ingredients for life are everywhere. It would be pretty odd if we were alone. Basically a statistical impossibility.

I love this. Not sure why it took me so long to actively come into this thread, lol.

I don't believe there is a record of a red dwarf actually being classified or caught dead, yet, but we do know what's likely going to happen with them afterward which is to become a white dwarf...which becomes even more interesting to me!

I could be a little off, but I remember reading an article from last year talking about inhabitable zones with a red dwarf, and exoplanets have a protective layer that holds off the large flares.

And that last point. Wow. We are truly small in the grand scheme of things. We could be the first, we could be the middle, but we are darn near not close to the end. There just has to be life elsewhere. Like you were alluding to, it statistically makes sense.

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[PVarck31]

Re: The Astronomy and Physics thread. And things of the like.

I love this. Not sure why it took me so long to actively come into this thread, lol.

I don't believe there is a record of a red dwarf actually being classified or caught dead, yet, but we do know what's likely going to happen with them afterward which is to become a white dwarf...which becomes even more interesting to me!

I could be a little off, but I remember reading an article from last year talking about inhabitable zones with a red dwarf, and exoplanets have a protective layer that holds off the large flares.

And that last point. Wow. We are truly small in the grand scheme of things. We could be the first, we could be the middle, but we are darn near not close to the end. There just has to be life elsewhere. Like you were alluding to, it statistically makes sense.

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Glad to have you aboard! The protective layer is the magnetosphere. It would protect a planet from cosmic rays, radiation, other charged particles. But not all planets have them. So it would give a much greater chance for life to evolve if the planet had a magnetosphere.

But we aren't too sure how common planets with a magnetosphere are for rocky planets. But then there is the potentially even bigger problem. For planets to be in the habitable zone of a red dwarf, they have to be very close to the star. This can cause a planet there to be tidally locked. One side of the planet always facing the star. So even though that planet is in the habitable zone, It's probably too hot for life on one side, and too cold for the other. However, there are ways around this. The area between the light and dark side. It's called the Terminator Line. Temps in that area could be at a point where liquid water could exist on the surface.

I think the most exciting thing for me if we ever find alien life of some sort before I'm gone, we will know that it's everywhere. And that's pretty cool to think about.

[PVarck31]

Re: The Astronomy and Physics thread. And things of the like.

Oops, JWST accidently found the oldest galaxy ever seen. 13.3 Billion light years away. over 97% the age of the universe.

[Bard]

Re: The Astronomy and Physics thread. And things of the like.

Yeah, if it is accidentally doing that I am super excited what it does on purpose!

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[PVarck31]

Re: The Astronomy and Physics thread. And things of the like.

TRAPPIST-1 image. This is groundbreaking. The first direct and detailed observation of a red dwarf star.