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Thread: james webb telescope

  1. #31
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    News update for the James Webb Telescope

    Cryogenic Testing Completed for NASA's Webb Telescope Mirrors.

    GREENBELT, Md. -- Cryogenic testing is complete for the final six primary mirror segments and a secondary mirror that will fly on NASA's James Webb Space Telescope. The milestone represents the successful culmination of a process that took years and broke new ground in manufacturing and testing large mirrors.
    more information see link below.

    http://www.nasa.gov/topics/technolog...rror-cryo.html

  2. #32
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    Webb survives deep freeze test

    R&D Magazine

    After 116 days of being subjected to extremely frigid temperatures like that in space, the heart of the James Webb Space Telescope, the Integrated Science Instrument Module (ISIM) and its sensitive instruments, emerged unscathed from the thermal vacuum chamber at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

    Teams of engineers and technicians have been on heart-monitoring duty around the clock since this complicated assembly was lowered into the chamber for its summer-long test.

    Engineer Mike Drury, the ISIM Lead Integration and Test Engineer, is one of the test directors making sure that Webb will thrive in the frigid conditions at its final destination in space one million miles away from Earth. "The telescope is going to L2 or Lagrange Point 2, which is a very extreme environment," said Drury. "The heart of Webb called ISIM is a very important part of the observatory and will provide all of Webb's images."
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  3. #33
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    Good News, James Webb is Still a Go. Bad News, Launching in 2021

    https://www.universetoday.com/139549...ching-in-2021/

  4. #34
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    Quote Originally Posted by Launch window View Post
    Good News, James Webb is Still a Go. Bad News, Launching in 2021

    https://www.universetoday.com/139549...ching-in-2021/
    I should live so long.

  5. #35
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    The Searchers: How Will NASA Look for Signs of Life Beyond Earth?
    https://exoplanets.nasa.gov/news/168...-beyond-earth/

    James Webb Space Telescope program aims to map the earliest structures of the universe
    https://www.rit.edu/news/james-webb-...tures-universe

  6. #36
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    Launch date October
    https://marylandreporter.com/2021/05...pe-in-october/
    NASA’s Goddard Space Flight Center set to launch next-gen telescope in October

    Vid
    https://www.youtube.com/watch?v=QbyKJlmOQbY


    Planet hunting ability, imaging planets in IR is much easier than visible, in a ways perhaps more of successor of Spitzer than Hubble. The L2 point is rapidly establishing itself as a pre-eminent location for advanced spaceprobes. the Planetary dot org website says an early target for Webb will be TRAPPIST-1, a star system 40 light-years away the star system contains multiple planets in the habitable zone, the not-too-hot, not-too-cold region around a star where liquid water can exist on a planet’s surface.
    Last edited by Launch window; 2021-May-01 at 05:56 PM.

  7. #37
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    Quote Originally Posted by elizabeth25 View Post
    cool, not long to wait then.
    Well if 10 years is not too long to wait, than you are in luck
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  8. #38
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    A plan to use exoplanets as detectors for gravitationally captured dark matter
    https://www.universal-sci.com/articl...ing-exoplanets

    The heating of exoplanets could, in principle, be measured by NASA's James Webb Space Telescope, an infrared space telescope that is expected to be launched in October of this year. It is supposed to succeed the famous Hubble Space Telescope and will present enhanced infrared resolution and sensitivity over Hubble. Given that exoplanets have anomalous heating associated with dark matter, astronomers should be able to pick it up, according to Smirnov.
    Scientists believe that dark matter density increases toward the center of our Milky Way galaxy. If that is true, researchers should find that the closer planets are to the galactic center, the more their temperatures should rise.

    "If we would find something like that, it would be amazing. Clearly, we would have found dark matter," Smirnov said.

    Smirnov and his colleague and co-author Rebecca Leane Leane propose one type of search that would require looking at so-called 'Super Jupiters' and brown dwarfs in close proximity to Earth as well as rogue planets due to the above-mentioned reduction in background heat near such astronomical objects and the lack of interference from nearby stars in case of rogue planets.

  9. #39
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    Media Invited to Virtual Briefing as NASA’s Webb Prepares for Launch http://www.spaceref.com/news/viewpr.html?pid=57388


    NASA article 2020 info
    'NASA's Webb Telescope Will Study Jupiter, Its Rings, and Two Intriguing Moons'
    https://www.nasa.gov/feature/goddard...triguing-moons

    Ganymede

    Several features of icy Ganymede make it fascinating for astronomers. Aside from being the largest moon in the solar system, and larger even than the planet Mercury, it is the only moon known to have its own magnetic field. The team will investigate the very outer parts of Ganymede's atmosphere, its exosphere, to better understand the moon's interaction with particles in Jupiter's magnetic field.

    There is also evidence that Ganymede may have a liquid saltwater ocean beneath its thick surface ice, which Webb will investigate with detailed spectroscopic study of surface salts and other compounds. The team's experience studying Ganymede's surface may be useful in the future study of other icy solar system moons suspected of having subsurface oceans, including Saturn's moon Enceladus and fellow Jovian satellite Europa.
    Webb will also provide unprecedented data on the temperature of Io's hotspots, and determine if they are closer to volcanism on Earth today, or if they have a much higher temperature, similar to the environment on Earth in the early years after its formation. Previous observations by the Galileo mission and ground observatories have hinted at these high temperatures; Webb will follow up on that research and provide new evidence that may settle the question.
    Last edited by Launch window; 2021-May-08 at 10:57 PM.

  10. #40
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    NASA's giant Webb telescope succeeds in key pre-launch test
    https://www.spacedaily.com/reports/N..._test_999.html

  11. #41
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    concerns about james Webb’s ariane-5 rocket might push the launch back. Universe Today

    A new report from the US Government Accountability Office (GAO) says that the launch of the long-awaited, highly anticipated James Webb Space Telescope (JWST) will very likely be delayed due to an anomaly identified in the Ariane 5 launch vehicle. Launch for JWST is currently scheduled for October 31, 2021, but that date could slip by at least a couple of weeks.
    Let’s hope no more delays!

  12. #42
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    I expect to be old and gray before Webb ever launches. Of course, I already am!
    Seriously, it'll be awesome to see it finally go. After all the years of effort, thy just can't take too many precautions.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  13. #43
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    I hear at one time back in the day they thought about moving it by aircraft but now requires a lot more than a “fragile” sticker slapped onto on the side of a box. The telescope will leave by ship on the US West coast then sail through the Panama Canal to Europe’s spaceport near Kourou.
    https://www.universetoday.com/151171...l-be-in-space/
    'The plan is that JWST will be placed inside a large climate-controlled shipping container and taken on a ship from the Northrup Grumman facility where it is now, in California, to the European rocket facility at Kourou in French Guiana. The trip will take approximately two weeks and involve passage through the Panama Canal.'

  14. #44
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    Quote Originally Posted by Trebuchet View Post
    I expect to be old and gray before Webb ever launches. Of course, I already am!
    Seriously, it'll be awesome to see it finally go. After all the years of effort, thy just can't take too many precautions.
    Yes, this is another case where I won’t be happy until it is in place and working. For instance, after all this time, expense and work, I could just imagine something going wrong with the launch and ruining it all. Hopefully everything will work out.

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  15. #45
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    From Ars Technica:

    https://arstechnica.com/science/2021...e-slips-again/

    "Now, however, three considerations have pushed the launch into November or possibly early December"
    "These factors include shipment of the telescope, the readiness of the Ariane 5 rocket, and the readiness of the spaceport in South America as well. "

    sigh

  16. #46
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    You know what's sad? The first post in this thread is more than ten years back. Heck, I was still gainfully employed and not on Medicare then!
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  17. #47
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    Quote Originally Posted by Grey View Post
    It's scheduled for launch in 2014.
    And here's the third post in the thread.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  18. #48
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    Quote Originally Posted by Trebuchet View Post
    You know what's sad? The first post in this thread is more than ten years back. Heck, I was still gainfully employed and not on Medicare then!
    You know what’s even sadder? It’s only one of the more recent threads on the topic. This one goes back to 2002 and was updated as recently as 2020:

    https://forum.cosmoquest.org/showthr...n-(James-Webb)

    "The problem with quotes on the Internet is that it is hard to verify their authenticity." — Abraham Lincoln

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