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Message started by justin_o_guy2 on 07/11/22 at 21:09:59

Title: Deep space!
Post by justin_o_guy2 on 07/11/22 at 21:09:59

https://www.nasa.gov/image-feature/goddard/2022/nasa-s-webb-delivers-deepest-infrared-image-of-universe-yet

And to all you guys who have a big,high quality monitor,,you lucky Dawgs!

Title: Re: Deep space!
Post by justin_o_guy2 on 07/12/22 at 05:07:55

I dunno what kinda science nerds you lot are,but stuff like this gets my eyes focused.

The image shows the galaxy cluster SMACS 0723 as it appeared 4.6 billion years ago. The combined mass of this galaxy cluster acts as a gravitational lens, magnifying much more distant galaxies behind it. Webb’s NIRCam has brought those distant galaxies into sharp focus – they have tiny, faint structures that have never been seen before, including star clusters and diffuse features. Researchers will soon begin to learn more about the galaxies’ masses, ages, histories, and compositions, as Webb seeks the earliest galaxies in the universe.

The combined mass of this galaxy cluster acts as a gravitational lens, magnifying much more distant galaxies behind it

Yeah, I get that light is affected by gravity, but since that is true, does that mean it has mass? Goin with no here,or turning on a high power light with a reflective shield, focusing the beam into a narrow shaft of light would have a measurable recoil. Or is gravity just distorting the space the light is going through, like the way heat coming up from the road messes with the light,making the picture of what is behind that area wavy. I'm goin with ,more likely a correct guess than light has mass.

Any educated people want to take a swing at a tutorial?

The geniuses who actually understand the parts I just read ,well, I envy them that understanding.

Title: Re: Deep space!
Post by Eegore on 07/12/22 at 21:13:21

"Yeah, I get that light is affected by gravity, but since that is true, does that mean it has mass?"

It used to be thought that gravity and light have no mass.

But in order to align with quantum mechanics gravity or gravitons must have some mass. That's not what I think this is referring to though.

In this case they refer to "combined mass" of an entire galaxy cluster. This is basically measuring it's rotation curves. This plots rotation speed which is obtained by measuring the Doppler shift of multiple spectral lines, that is measured against the distance from that Galactic center.

So they use a Newtonian model and utilize an algorithm to create a galaxy mass number.

A pretty big project to measure gravitational waves is planned:

https://www.elisascience.org/

Title: Re: Deep space!
Post by verslagen1 on 07/13/22 at 05:51:52

27383E3924231222122A38347F4D0 wrote:

The combined mass of this galaxy cluster acts as a gravitational lens, magnifying much more distant galaxies behind it

Yeah, I get that light is affected by gravity, but since that is true, does that mean it has mass? Goin with no here, or turning on a high power light with a reflective shield, focusing the beam into a narrow shaft of light would have a measurable recoil. Or is gravity just distorting the space the light is going through, like the way heat coming up from the road messes with the light, making the picture of what is behind that area wavy. I'm goin with ,more likely a correct guess than light has mass.

Any educated people want to take a swing at a tutorial?

Title: Re: Deep space!
Post by justin_o_guy2 on 07/13/22 at 18:45:53

840 n my room after IDK how long in recovery. The tech they have is really cool. I'm a bit ditsy from pain meds. Family has gone home.
More later, doctor said it went well

Title: Re: Deep space!
Post by zevenenergie on 07/15/22 at 04:37:10

4F5C4B4A55585E5C5708390 wrote:

[quote author=27383E3924231222122A38347F4D0 link=1657598999/0#1 date=1657627675]The combined mass of this galaxy cluster acts as a gravitational lens, magnifying much more distant galaxies behind it

Yeah, I get that light is affected by gravity, but since that is true, does that mean it has mass? Goin with no here, or turning on a high power light with a reflective shield, focusing the beam into a narrow shaft of light would have a measurable recoil. Or is gravity just distorting the space the light is going through, like the way heat coming up from the road messes with the light, making the picture of what is behind that area wavy. I'm goin with ,more likely a correct guess than light has mass.

Any educated people want to take a swing at a tutorial?

Light doesn't have to have mass for gravity to have an effect on it.
For you are looking at light that has traveled thru something that does have mass.
Same as looking at the rays of the sun refracted thru vapor trails.
Except you're looking thru a 'bubble' of gas millions of light years away.[/quote]

I would say; light has a mass and thats why Gravity has an effect on it.
And it treaveled tru nothing, someting of mass would stop it.

And thats the nice thing about it. The telescoop is the first ting this light hits in billions of years!

Due to the gravitational distortion of light, one and the same star may appear multiple times in the firmament and each appearance may represent a different time periot. :o

Title: Re: Deep space!
Post by justin_o_guy2 on 07/15/22 at 10:23:02

Due to the gravitational distortion of light, one and the same star may appear multiple times in the firmament and each appearance may represent a different time periot. Shocked

Aaalmost,, I can almost get that..