Author Topic: NASA - James Webb Space Telescope - Discussion and Updates  (Read 284828 times)

Offline Blackstar

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #720 on: 05/03/2018 10:27 PM »
It's in testing. Some things will not go right. That's what testing is for. That's why you do testing.

The thing to ask is if the things that are going wrong are big things or small things. Big things would be instruments not working, electronics not working, EM interference with systems, problems with getting down to the design temperatures. None of that is happening.

Online eeergo

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #721 on: 05/03/2018 11:33 PM »
However it's also surprising (and unsettling) that after many billion dollars spent, "screws and washers" fall out. That could easily lead to big things failing.

Offline kch

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #722 on: 05/03/2018 11:46 PM »
However it's also surprising (and unsettling) that after many billion dollars spent, "screws and washers" fall out. That could easily lead to big things failing.

Indeed it could!  Better to find (and fix) them now, rather than after launch, yes?  :)

Offline kch

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #723 on: 05/03/2018 11:50 PM »
Such as the 2012-2013 budget crash when they dropped ESA Exomars ? Only to get a far more expensive and capable Mars 2020 soon thereafter.  ::)

Although the withdrawal of the US from the project adds to my worry about the landing outcome in 2021, some have actually gained from this :) Yes, the current ExoMars-Trace Gas Orbiter is quite different from what was originally envisioned. But because of this, we, Bulgarians, have the chance to fly our own instrument due to our collaboration with the Russians (Lulin-MO attached to FREND). And the Russians also had the chance to refly some of their heritage from Phobos-Grunt and Mars-96 mssions.

Now Trace Gas Orbiter is in orbit, and ... it's good news. For those who participate in the project, at least.

For all of us.  :)

Offline Star One

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #724 on: 05/22/2018 08:08 PM »

Scientific Discovery with the James Webb Space Telescope

Quote
For the past 400 years, astronomers have sought to observe and interpret the Universe by building more powerful telescopes. These incredible instruments extend the capabilities of one of our most important senses, sight, towards new limits such as increased sensitivity and resolution, new dimensions such as exploration of wavelengths across the full electromagnetic spectrum, new information content such as analysis through spectroscopy, and new cadences such as rapid time-series views of the variable sky. The results from these investments, from small to large telescopes on the ground and in space, have completely transformed our understanding of the Universe; including the discovery that Earth is not the center of the Universe, that the Milky Way is one among many galaxies in the Universe, that relic cosmic background radiation fills all space in the early Universe, that that the expansion rate of the Universe is accelerating, that exoplanets are common around stars, that gravitational waves exist, and much more. For modern astronomical research, the next wave of breakthroughs in fields ranging over planetary, stellar, galactic, and extragalactic science motivate a general-purpose observatory that is optimized at near- and mid-infrared wavelengths, and that has much greater sensitivity, resolution, and spectroscopic multiplexing than all previous telescopes. This scientific vision, from measuring the composition of rocky worlds in the nearby Milky Way galaxy to finding the first sources of light in the Universe to other topics at the forefront of modern astrophysics, motivates the state-of-the-art James Webb Space Telescope (Webb). In this review paper, I summarize the design and technical capabilities of Webb and the scientific opportunities that it enables.

https://arxiv.org/abs/1805.06941

Offline bolun

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #725 on: 06/06/2018 11:34 AM »
#14: TESTS, MOVING TO A NEW HOME, AND MORE TESTS

04 June 2018 10:00

In the last year, the James Webb Space Telescope (JWST) and in particular the telescope and the instruments have passed some key milestones on their road towards launch, now planned for 2020.

http://sci.esa.int/jwst/60351-14-tests-moving-to-a-new-home-and-more-tests/

Image credit: NASA/Chris Gunn

Offline catdlr

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #726 on: 06/06/2018 04:07 PM »
#14: TESTS, MOVING TO A NEW HOME, AND MORE TESTS

04 June 2018 10:00

In the last year, the James Webb Space Telescope (JWST) and in particular the telescope and the instruments have passed some key milestones on their road towards launch, now planned for 2020.

http://sci.esa.int/jwst/60351-14-tests-moving-to-a-new-home-and-more-tests/

Image credit: NASA/Chris Gunn

Recent article but all old news (old article must have been updated with some new info).   It's been here at Northrup Space division in Redondo Beach for several months.
Tony De La Rosa

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #727 on: 06/26/2018 09:46 PM »
From Facebook  University of Arizona Department of Astronomy and Steward Observatory

"NASA will host a media teleconference at 1 p.m. EDT, Wednesday, June 27, to provide an update on the agency’s James Webb Space Telescope and the findings of an external independent review board. Webb will be the world’s premier infrared space observatory and the largest astronomical space science telescope ever built.

Audio of the call will stream live on NASA’s website.

Participants in the teleconference are:

Stephen Jurczyk, NASA associate administrator
Thomas Zurbuchen, associate administrator of NASA’s Science Mission Directorate
Tom Young, chair of the Independent Review Board
John Mather, Webb senior project scientist at NASA’s Goddard Space Flight Center..."
« Last Edit: 06/26/2018 09:48 PM by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Online Targeteer

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #728 on: 06/26/2018 10:33 PM »
June 26, 2018
MEDIA ADVISORY M18-100

NASA Hosts Media Teleconference on Status of James Webb Space Telescope

NASA will host a media teleconference at 1 p.m. EDT, Wednesday, June 27, to provide an update on the agency’s James Webb Space Telescope and the findings of an external independent review board. Webb will be the world’s premier infrared space observatory and the largest astronomical space science telescope ever built.

Audio of the call will stream live on NASA’s website.

Participants in the teleconference are:

    Stephen Jurczyk, NASA associate administrator
    Thomas Zurbuchen, associate administrator of NASA’s Science Mission Directorate
    Tom Young, chair of the Independent Review Board
    John Mather, Webb senior project scientist at NASA’s Goddard Space Flight Center

To participate, media must email their name and affiliation to Steve Cole at [email protected] or call 202-358-0918 by noon June 27.

Webb, a highly complex observatory, will solve mysteries of our solar system, look beyond to distant worlds around other stars, and probe the mysterious structures and origins of our universe. Webb is an international project led by NASA with its partners, ESA (European Space Agency) and the Canadian Space Agency.

For more information about the Webb Space Telescope, visit:

https://www.nasa.gov/webb
« Last Edit: 06/27/2018 06:18 AM by jacqmans »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline ChrisGebhardt

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #729 on: 06/27/2018 01:57 PM »
Going back through previous articles on Webb and found this (attached).  My guess is this is likely what we're going to hear about today -- the Independent Review Board's assessment of James Webb and the schedule to a NET May 2020 launch.

If my memory's correct, the IRB's report was due in June.

EDIT: Yup.  IRB report was due within 90 days from 27 March.  That deadline was 2 days ago.  Dates align quite perfectly.
« Last Edit: 06/27/2018 02:03 PM by ChrisGebhardt »

Offline as58

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #730 on: 06/27/2018 04:26 PM »
March 30, 2021...

Offline AncientU

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #731 on: 06/27/2018 04:32 PM »
JWST or WFIRST... pick one, NASA.
"If we shared everything [we are working on] people would think we are insane!"
-- SpaceX friend of mlindner

Online FutureSpaceTourist

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #732 on: 06/27/2018 04:35 PM »
Some PR ahead of today’s call, including Mar 2021 date



« Last Edit: 06/27/2018 04:43 PM by FutureSpaceTourist »

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #733 on: 06/27/2018 04:38 PM »
https://www.nasa.gov/press-release/nasa-completes-webb-telescope-review-commits-to-launch-in-early-2021


NASA Completes Webb Telescope Review, Commits to Launch in Early 2021

The Independent Review Board (IRB) established by NASA to assess progress on its James Webb Space Telescope has unanimously recommended that development on the world’s premier science observatory should continue; NASA has established a new launch date for Webb of March 30, 2021.

A report issued by the review board addresses a range of factors influencing Webb’s schedule and performance, including the technical challenges and tasks remaining by primary contractor Northrop Grumman before launch.

Read the full report and NASA’s response at:
James Webb Space Telescope IRB Report and NASA Response

“Webb should continue based on its extraordinary scientific potential and critical role in maintaining U.S. leadership in astronomy and astrophysics,” said Tom Young, the chair of the review board. “Ensuring every element of Webb functions properly before it gets to space is critical to its success.”

The board also reaffirmed Webb’s significant complexity, incredible scientific potential, and importance to astrophysics. The report includes several recommendations for moving forward, some of which NASA has already initiated. The agency agrees with the review board’s expert guidance on decisive steps necessary to safeguard and complete the telescope’s development.

NASA Administrator Jim Bridenstine sent a message to the NASA workforce Wednesday about the report. “Webb is vital to the next generation of research beyond NASA’s Hubble Space Telescope. It’s going to do amazing things – things we’ve never been able to do before – as we peer into other galaxies and see light from the very dawn of time,” said Administrator Bridenstine. “Despite major challenges, the board and NASA unanimously agree that Webb will achieve mission success with the implementation of the board’s recommendations, many of which already are underway.”
NASA Administrator Jim Bridenstine
Video: Administrator Bridenstine: NASA is Committed to Webb Telescope

“The more we learn more about our universe, the more we realize that Webb is critical to answering questions we didn’t even know how to ask when the spacecraft was first designed,” said Thomas Zurbuchen, associate administrator for NASA’s Science Mission Directorate. “Webb is poised to answer those questions, and is worth the wait. The valuable recommendations of the IRB support our efforts towards mission success; we expect spectacular scientific advances from NASA’s highest science priority.”
Webb telescope with mirror unfolded inside facility at NASA Goddard
Video: NASA Science Leaders: Webb Telescope Complex and Unprecedented

In its report, the IRB found that technical issues, including human errors, have greatly impacted the development schedule.
Technician in clean room suit working on Webb telescope
Video: James Webb Space Telescope: Worth the Wait

The agency previously had estimated an earlier launch date, but awaited findings from the IRB before making a final determination and considered data from Webb’s Standing Review Board. The agency established the new launch date estimate to accommodate changes in the schedule due to environmental testing and work performance challenges by Northrop Grumman on the spacecraft’s sunshield and propulsion system. The telescope’s new total lifecycle cost, to support the revised launch date, is estimated at $9.66 billion; its new development cost estimate is $8.8 billion.

From detecting the light of the first stars and galaxies in the distant universe, to probing the atmospheres of exoplanets for possible signs of habitability, Webb’s world-class science not only will shed light on the many mysteries of the universe, it also will complement and further enhance the discoveries of other astrophysics projects.

The first telescope of its kind, and an unprecedented feat of engineering, Webb is at the very leading edge of technological innovation and development. At its conception, challenges were anticipated for such a unique observatory of its size and magnitude. Webb was designed with highly sophisticated instruments to accomplish the ambitious scientific goals outlined in the National Academy of Sciences 2000 Decadal Survey – to answer the most fundamental questions about our cosmic origins.

Webb will be folded, origami-style, for launch inside Arianespace’s Ariane 5 launch vehicle fairing – about 16 feet (5 meters) wide. After its launch, the observatory will complete an intricate and technically-challenging series of deployments – one of the most critical parts of Webb’s journey to its final orbit, about one million miles from Earth. When completely unfurled, Webb’s primary mirror will span more than 21 feet (6.5 meters) and its sunshield will be about the size of a tennis court.

Because of its size and complexity, the process of integrating and testing parts is more complicated than that of an average science mission. Once the spacecraft element has completed its battery of testing, it will be integrated with the telescope and science instrument element, which passed its tests last year. The fully-assembled observatory then will undergo a series of challenging environmental tests and a final deployment test before it is shipped to the launch site in Kourou, French Guiana.

Webb is an international project led by NASA with its partners, the ESA (European Space Agency) and the Canadian Space Agency.

-end-
« Last Edit: 06/27/2018 04:40 PM by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline lrk

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #734 on: 06/27/2018 04:44 PM »
Someone remind me, when exactly is A5 supposed to be retiring?  If there are further delays, how hard would it be to move JWST to A6? 

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #735 on: 06/27/2018 04:51 PM »
Link to the audio which doesn't come through on the briefing announcements

https://www.nasa.gov/nasalive
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."


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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #737 on: 06/27/2018 04:59 PM »
Link to the audio which doesn't come through on the briefing announcements

https://www.nasa.gov/nasalive

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Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline ChrisGebhardt

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #738 on: 06/27/2018 05:05 PM »
NASA accepts IRB's recommendations and are already implementing most of them.

Launch NET 30 March 2021 launch.

Replan completed a total life-cycle cost is $9.66bn -- including 5 years of operation.

Development cost is increasing from $8bn to $8.8bn -- cost cap breach.

Offline ChrisGebhardt

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Re: NASA - James Webb Space Telescope - Discussion and Updates
« Reply #739 on: 06/27/2018 05:06 PM »
IRB was completed on 31 May. 

Human errors and integrations challenges found to be cause of delays and cost increases.

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