|
Post by thomas cat on Jul 12, 2022 21:30:12 GMT -7
The Carina Nebula is one of the largest and brightest nebulae that is visible in the night sky. It is located about 7,600 light-years away in the southern constellation of Carina. The Carina Nebula is home to many massive stars, several times larger than the Sun. This new photo from Webb reveals a host of stars that had previously not been visible. “This deep field, taken by Webb’s Near-Infrared Camera (NIRCam), is a composite made from images at different wavelengths, totaling 12.5 hours — achieving depths at infrared wavelengths beyond the Hubble Space Telescope’s deepest fields, which took weeks,” NASA says. The photo is the highest resolution photo of deep space that has ever been taken and the light captured by Webb in this photo has traveled for more than 13 billion years. For comparison, here is JWST vs HUBBLE side by side , also note JWST captured this with 12 hours of exposure while HUBBLE took 10 days. Stephan’s Quintet, also known as Hickson Compact Group 92, exists about 290 million light-years away, and four of the five galaxies within the quintet are what NASA describes as locked in a cosmic dance of repeated close encounters. This, too, was captured with in both near- and mid-infrared. “Stephan’s Quintet, a visual grouping of five galaxies, is best known for being prominently featured in the holiday classic film, ‘It’s a Wonderful Life,’” NASA says. The Southern Ring Nebula, also known as the “Eight-Burst” nebula, is what is known as a planetary nebula: an expanding cloud of gas, surrounding a dying star. It is nearly half a light-year in diameter and is located about 2,000 light-years from Earth. You may say, but I have seen pictures similar to these taken by the Hubble, and you would be right. The thing is, these are further away and but with as much resolution of the much closer photos that Hubble took. When it comes to telescopes, size is everything. It's all about collecting light. The bigger the mirror, the more you are going to see. The real science is not how beautiful these pictures can be, it's analyzing the lights spectrum from whatever they are pointing it at. Here is just one example... WASP-96 b is a giant planet outside Earth’s solar system that NASA says is composed mainly of gas. The planet, located nearly 1,150 light-years away, orbits its star every 3.4 days. It has about half the mass of Jupiter, and its discovery was announced in 2014. This observation covers infrared wavelengths of light that scientists have not had access to before Webb. “NASA’s James Webb Space Telescope has captured the distinct signature of water, along with evidence for clouds and haze, in the atmosphere surrounding a hot, puffy gas giant planet orbiting a distant Sun-like star,” NASA says. “The observation, which reveals the presence of specific gas molecules based on tiny decreases in the brightness of precise colors of light, is the most detailed of its kind to date, demonstrating Webb’s unprecedented ability to analyze atmospheres hundreds of light-years away. While the Hubble Space Telescope has analyzed numerous exoplanet atmospheres over the past two decades, capturing the first clear detection of water in 2013, Webb’s immediate and more detailed observation marks a giant leap forward in the quest to characterize potentially habitable planets beyond Earth.” And just to be clear. While I do have a couple telescopes, I'm just an amateur. Most of this information was cut and pasted from this webpage... The First Five Stunning Photos Captured by the James Webb Telescope
|
|
|
Post by End Zone on Jul 13, 2022 3:16:28 GMT -7
TC, nice work collating JWST images and text. You and I are avid sky watchers and dreamers. The JWST capability is a huge leap (x100?) over the Hubble telescope capability. Truth in advertising...the JWST collects light in the IR spectrum as you noted. IR imagery is not visible to the human eye until machine processed. Most IR is black and white in its original format. Not until colorized does the imagery turn that reddish color. Unfortunately, most of the publicly released JWST images are 'artificially colorized' with yellow, green, and blue tints to make the images super pretty and Hubble-like awesome. I hope the JWST media ends the silly photoshopping. Show us the JWST facts only. No hokey-pokey. We understand the science behind the IR imagery. Color fakery is misleading and will undermine JWST credibility.
In the next couple years, I do think that Earthlings will finally have evidence in hand of carbon-based lifeforms on another big rocky planet in another solar system in our Milky Way galaxy. That lifeform may just be a fern tree top on a humid land plain or an algae bloom on a blue water ocean. It's a start.
|
|
|
Post by FLCardinalFan on Jul 13, 2022 16:47:59 GMT -7
Thanks TC,
I love the commentary and what a universe we live in.
The images of the dying star leads my mind to wander
Was there loss of life? How intelligent was that life?
How do they age? Certainly not in years
PutMein the algae, ferns
My question is does life always start that way on a planet?
What if there were no giant oceans only lakes of fresh water or is it salt water.
|
|
|
Post by End Zone on Jul 14, 2022 3:49:39 GMT -7
Thanks TC, I love the commentary and what a universe we live in. The images of the dying star leads my mind to wander Was there loss of life? How intelligent was that life? How do they age? Certainly not in years PutMein the algae, ferns My question is does life always start that way on a planet? What if there were no giant oceans only lakes of fresh water or is it salt water. www.livescience.com/13363-7-theories-origin-life.htmlFLCF, sadly, life on earth will end someday, if the sun and solar system follows past examples. One example is that the sun's outer shell of super hot gas will engulf the earth rip away the last bits of the atmosphere and a good portion of the rocky outer surface. This could happen in about 5 billion years. The Earth's iron core will survive as a much cooler solid metal mass and then orbit a tiny white-hot sun that will happily glow for a trillion more years, unless everything is swallowed up by a marauding black hole when the Andromeda Galaxy whizzes by the Milky Way neighborhood in 2 billion years. Humans need to figure out a way to get away before the big fire starts. Once the fire gets going, earth-bound humans are burned toast. I do not know how planetary life starts anywhere. Theories abound about how things got started on Earth 3 billion years ago. See the above livescience.com discussion. Note that there is no discussion about theological theories. It's all about the science side of things. I look forward to the JWST findings. Some ideas about space will be turned on their heads fairly soon. Some other ideas about space will be born anew. Perhaps the question about the existence of aliens will finally be put to bed...but I doubt it...the many billions of billions of galaxies and trillions of trillions of planets in those galaxies make a bet against life elsewhere pretty darned absurd. 1 to 100000000000000000000000000000000000000000000 at least. I will take that bet. I like to think that I have someplace else to go when my life on earth ends and I get the call. How long my wait for that call will take is anybody's guess. My pop and brother are already in line. Meanwhile, I will hang out with my wife and enjoy my days here.
|
|
|
Post by thomas cat on Jul 14, 2022 4:55:29 GMT -7
TC, nice work collating JWST images and text. You and I are avid sky watchers and dreamers. The JWST capability is a huge leap (x100?) over the Hubble telescope capability. Truth in advertising...the JWST collects light in the IR spectrum as you noted. IR imagery is not visible to the human eye until machine processed. Most IR is black and white in its original format. Not until colorized does the imagery turn that reddish color. Unfortunately, most of the publicly released JWST images are 'artificially colorized' with yellow, green, and blue tints to make the images super pretty and Hubble-like awesome. I hope the JWST media ends the silly photoshopping. Show us the JWST facts only. No hokey-pokey. We understand the science behind the IR imagery. Color fakery is misleading and will undermine JWST credibility. In the next couple years, I do think that Earthlings will finally have evidence in hand of carbon-based lifeforms on another big rocky planet in another solar system in our Milky Way galaxy. That lifeform may just be a fern tree top on a humid land plain or an algae bloom on a blue water ocean. It's a start. You may find this short 6 min video interesting. It does an excellent job explaining the how and the why they colorize images.
|
|
|
Post by End Zone on Jul 14, 2022 9:17:13 GMT -7
TC, that is an excellent tutorial on space imaging. Thank you!
|
|
|
Post by FLCardinalFan on Aug 2, 2022 20:23:58 GMT -7
SUPER NOVA
James Webb telescope live you tube video
The Link:
|
|
|
Post by thomas cat on Aug 2, 2022 21:08:17 GMT -7
SUPER NOVA James Webb telescope live you tube video The Link: Thanks so much for this heads up. I just wish they would give a little more information as to how sure they are. Are they really saying this will go nova in a matter of hours? Unfortunately, it's the wrong time of the year to see it during the night. Still if it goes super nova, it may even be visible during the daytime. I'm going to try not to get too excited until I know more. If it happens and like it said, it's a once in 10,000 year thing. The funny, or not so funny thing is, it may produce a gamma ray burst and fry all life on Earth if it's pointed in our direction. lol. I'm not worried yet, if it happens, we won't even see it coming. Gamma ray burst come at the speed of light. Just to be clear, I don't know how much credibility this link has. It seems to be credible, but this is big. You would think the major news people would be reporting this by now. I guess we will see.... Edit: After giving this more thought, I now realize now this is a fake live video. After doing a little research, it's not from NASA and the James Webb or Hubble telescope just doesn't work that way. It seemed believable because Betelgeuse is very close to going nova.
|
|
|
Post by End Zone on Aug 3, 2022 3:09:30 GMT -7
Source: Wikipedia, as of 3 August 2022.
"Betelgeuse is usually the tenth-brightest star in the night sky and, after Rigel, the second-brightest in the constellation of Orion.
There are several larger stars in the Milky Way, including supergiants like Mu Cephei and the peculiar hypergiant, VY Canis Majoris. Calculations of Betelgeuse's mass range from slightly under 10 to a little over 20 times that of the Sun. For various reasons, its distance has been quite difficult to measure; current best estimates are on the order of 500–600 light-years from the Sun – a comparatively wide uncertainty for a relatively nearby star.
Starting in October 2019, Betelgeuse began to dim noticeably, and by mid-February 2020 its brightness had dropped by a factor of approximately 3, from magnitude 0.5 to 1.7. By 22 February 2020, Betelgeuse stopped dimming and started to brighten again; and, as reported on 25 February 2022, has remained in a more normal brightness range. Infrared observations found no significant change in brightness over the last 50 years, suggesting that the dimming is due to a change in extinction rather than an underlying change in the luminosity of the star. Further studies suggested that occluding "large-grain circumstellar dust" may be the most likely explanation for the dimming of the star."
PutMeIn bottom line: The massive star is real and wierd. I love that star's name. Betelgeuse (aks Beatle Juice) always causes me to wonder if aliens are here now? They could be crawling around on multiple legs in every crook and cranny in our homes, watching for their big break to take over the Earth right after Betelgeuse explodes and microwaves all humans!
|
|
|
Post by FLCardinalFan on Aug 3, 2022 4:09:09 GMT -7
SUPER NOVA James Webb telescope live you tube video The Link: Thanks so much for this heads up. I just wish they would give a little more information as to how sure they are. Are they really saying this will go nova in a matter of hours? Unfortunately, it's the wrong time of the year to see it during the night. Still if it goes super nova, it may even be visible during the daytime. I'm going to try not to get too excited until I know more. If it happens and like it said, it's a once in 10,000 year thing. The funny, or not so funny thing is, it may produce a gamma ray burst and fry all life on Earth if it's pointed in our direction. lol. I'm not worried yet, if it happens, we won't even see it coming. Gamma ray burst come at the speed of light. Just to be clear, I don't know how much credibility this link has. It seems to be credible, but this is big. You would think the major news people would be reporting this by now. I guess we will see.... Edit: After giving this more thought, I now realize now this is a fake live video. After doing a little research, it's not from NASA and the James Webb or Hubble telescope just doesn't work that way. It seemed believable because Betelgeuse is very close to going nova. you got to be kidding me people go to all that trouble for a fake video of this
|
|
|
Post by End Zone on Aug 3, 2022 14:12:26 GMT -7
Thanks so much for this heads up. I just wish they would give a little more information as to how sure they are. Are they really saying this will go nova in a matter of hours? Unfortunately, it's the wrong time of the year to see it during the night. Still if it goes super nova, it may even be visible during the daytime. I'm going to try not to get too excited until I know more. If it happens and like it said, it's a once in 10,000 year thing. The funny, or not so funny thing is, it may produce a gamma ray burst and fry all life on Earth if it's pointed in our direction. lol. I'm not worried yet, if it happens, we won't even see it coming. Gamma ray burst come at the speed of light. Just to be clear, I don't know how much credibility this link has. It seems to be credible, but this is big. You would think the major news people would be reporting this by now. I guess we will see.... Edit: After giving this more thought, I now realize now this is a fake live video. After doing a little research, it's not from NASA and the James Webb or Hubble telescope just doesn't work that way. It seemed believable because Betelgeuse is very close to going nova. you got to be kidding me people go to all that trouble for a fake video of this This Youtube video is correct and educational. You won't see a fake throbbing blob at 600 light years range 'real-time'. Just the facts, ma'am.
|
|
|
Post by FLCardinalFan on Aug 3, 2022 15:33:20 GMT -7
you got to be kidding me people go to all that trouble for a fake video of this This Youtube video is correct and educational. You won't see a fake throbbing blob at 600 light years range 'real-time'. Just the facts, ma'am. Thank You
|
|