Surely we need both?

I didn't know NASA could afford both? It would ba good news to hear the Hubble won't disappear with the coming of the JWST.

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rOZZ
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There is apparently every intention of making the Hubble Space Telescope last as long as possible. This makes sense considering the time, effort, and money already invested in it over the years for design, planning, construction, launching, and five maintenance missions. A commercial maintenance mission is being contemplated, for some time in the 2020s, now that the Space Shuttle is no longer available for such a task.

The HST will de-orbit due to the effects of atmospheric friction, some time between 2028 and 2040. The variable here is solar activity. If the Sun is less than typically active in the years ahead, the HST can be expected the remain in orbit longer. If the Sun kicks up its activity above normal, it will come down sooner. The Sun's activity tends to swell the Earth's atmosphere, and increase friction.

There appears to be a sense, now, that the Sun may be unusually quiet in the years ahead, so there are grounds for optimism about Hubble's longevity in orbit.

Good post thank you.

There is apparently every intention of making the Hubble Space Telescope last as long as possible. This makes sense considering the time, effort, and money already invested in it over the years for design, planning, construction, launching, and five maintenance missions. A commercial maintenance mission is being contemplated, for some time in the 2020s, now that the Space Shuttle is no longer available for such a task.

The HST will de-orbit due to the effects of atmospheric friction, some time between 2028 and 2040. The variable here is solar activity. If the Sun is less than typically active in the years ahead, the HST can be expected the remain in orbit longer. If the Sun kicks up its activity above normal, it will come down sooner. The Sun's activity tends to swell the Earth's atmosphere, and increase friction.

There appears to be a sense, now, that the Sun may be unusually quiet in the years ahead, so there are grounds for optimism about Hubble's longevity in orbit.

would it possible or feasible to design a space mission to boost the Hubble space telescope telescope to a higher orbit?
the reason for this: Scientists had hoped to operate Hubble at the same time as the James Webb Space Telescope

i google this question and found this from 2015.

Scientists had hoped to operate Hubble at the same time as the James Webb Space Telescope, currently planned for launch in late 2018. In spite of its giant 6.5-meter primary mirror, and its being advertised as a “successor” to Hubble, it is not a successor. Webb is optimized for infrared wavelengths extending just into the visible range (orange), while Hubble operates at ultraviolet and visible wavelengths, extending just into the near-infrared. The two instruments are complementary, with a slight overlap. There is no successor to Hubble; no comparably large space telescope designed to observe at visible or ultraviolet wavelengths is anywhere near launch.

Any future repair mission will most likely need to replace failed gyroscopes and reboost the telescope into a higher orbit. The gyroscopes spin at 19,200 revolutions per minute on gas bearings to measure and counter telescope drift, providing an extremely still platform for observations. According to the European Space Agency, they are the best available, but having moving parts they are prone to failure. Hubble’s orbit is low enough to encounter odd particles of air at the top of the atmosphere. Friction with these causes the orbit to slowly decay. Without a boost, it will re-enter early in the 2020s. Replacing instruments with more up-to-date cameras would be nice, but is not essential to keeping Hubble in business and productive. In terms of resources, the ability to carry cargo and to conduct spacewalks is essential. Excess propellant or a propulsion module is required for the reboost. We will soon have at least one spacecraft with all of these characteristics.

The SpaceX Falcon 9-launched Dragon v2, or “Crew Dragon,” is a NASA-subsidized, privately owned, human-rated capsule in advanced development. If the rest of its development goes well, it could fly as early as 2016 and be operational in late 2017. It will have every one of the required characteristics. Crucially, it has what amounts to a miniature version of the space shuttle’s payload bay — an unpressurized “trunk.”

The trunk is the cylindrical adapter between the spacecraft and its Falcon 9 launch vehicle, which remains with the Dragon capsule until just before re-entry. The freighter version of the Dragon has already carried a number of large experiments in its trunk for mounting on the exterior of the International Space Station. If the commercial crew trunk is used the same way, it should be able to easily carry multiple 11-kilogram Hubble rate sensor units, each about the size of a breadbox and carrying two gyroscopes. The telescope has a total of six gyroscopes; three are required for normal observations.
The Crew Dragon also has powerful rocket engines mounted around its perimeter to escape an exploding rocket. If those engines are not needed in an emergency, their fuel is available for use in orbit.

i guess it is a question of money . . . but if could get 8 or 10 industrial countries to fund at lest a fesability study ?
the purpose of such a mission:
Scientists had hoped to operate Hubble at the same time as the James Webb Space Telescope.
Read more here:
https://spacenews.com/op-ed-a-not-so-final-servicing-mission/

There is apparently every intention of making the Hubble Space Telescope last as long as possible. This makes sense considering the time, effort, and money already invested in it over the years for design, planning, construction, launching, and five maintenance missions. A commercial maintenance mission is being contemplated, for some time in the 2020s, now that the Space Shuttle is no longer available for such a task.

i found some more information to save HST:

Scientists had hoped to operate Hubble at the same time as the James Webb Space Telescope, currently planned for launch in late 2018. In spite of its giant 6.5-meter primary mirror,
James Webb Space Telescope being advertised as a “successor” to Hubble, it is not a successor.
Webb is optimized for infrared wavelengths extending just into the visible range (orange), while Hubble operates at ultraviolet and visible wavelengths, extending just into the near-infrared. The two instruments are complementary, with a slight overlap. There is no successor to Hubble; no comparably large space telescope designed to observe at visible or ultraviolet wavelengths is anywhere near launch.

as i mentioned in last post:
Possible commercial service missions #1

In terms of resources, the ability to carry cargo and to conduct spacewalks is essential. Excess propellant or a propulsion module is required for the reboost. We will soon have at least one spacecraft
- the SpaceX Falcon 9-launched Dragon v2 - with all of these characteristics. “Crew Dragon,” is a NASA-subsidized, privately owned, human-rated capsule in advanced development. If the rest of its development goes well, it could fly as early as 2016 and be operational in late 2017. It will have every one of the required characteristics. Crucially, it has what amounts to a miniature version of the space shuttle’s payload bay — an unpressurized “trunk.”

The SpaceX Falcon 9-launched Dragon v2,
Falcon 9 launches Crew Dragon on key test flight
by Jeff Foust — March 2, 2019
https://spacenews.com/falcon-9-launches-crew-dragon-on-key-test-flight/


Possible commercial service missions #2
As of 2017, the Trump Administration is considering a proposal by the Sierra Nevada Corporation to use a manned version of its:

Sierra Nevada Corporation's Dream Chaser spacecraft:

to service Hubble some time in the 2020s both as a continuation of its scientific capabilities and as insurance against any malfunctions in the to-be-launched James Webb Space Telescope.

https://en.wikipedia.org/wiki/Hubble_Space_Telescope#Possible_commercial_service_missions

https://en.wikipedia.org/wiki/Sierra_Nevada_Corporation

https://www.sncorp.com/what-we-do/dream-chaser-space-vehicle/

https://www.nasa.gov/missions/highlights/webcasts/shuttle/sts109/hubble-qa.html

I don't think the present orbit is the limiting factor. I think gyroscope life is the limiting factor. Also we don't have any spacecraft with a Canada arm to go up and grab it. It is what it is.

I don't think the present orbit is the limiting factor. I think gyroscope life is the limiting factor. Also we don't have any spacecraft with a Canada arm to go up and grab it. It is what it is.

Yes you are right Gary, as it says in the article - - Any future repair mission will most likely need to replace failed gyroscopes. The gyroscopes spin at 19,200 revolutions per minute on gas bearings to measure and counter telescope drift, providing an extremely still platform for observations. According to the European Space Agency, they are the best available, but having moving parts they are prone to failure.

https://spacenews.com/op-ed-a-not-so-final-servicing-mission/

Can We Save Hubble and Where is the James Webb Space Telescope?

https://youtu.be/DZF8md2bOQQ

Starting at 59m Dr Carol Christian (astrophysicist at the Space Telescope Science Institute) says money constraints, along with the much greater scientific potential of the JWT and WFIRST (along with the pressure of the scientific community), mean further maintenance mi$$ions to NASA's Hubble, manned or robotic, are improbable (unless a private sector initiative susprises us).

Thanks for your link, Byron. Curious Droid's videos (like the one you provided below) are *very* comprehensive, both in terms of contents and perspectives.

Can We Save Hubble and Where is the James Webb Space Telescope?

https://youtu.be/DZF8md2bOQQ

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Apr 3, 1999 - May 3, 2020

Can We Save Hubble and Where is the James Webb Space Telescope?

https://youtu.be/DZF8md2bOQQ

I have heard that the Hubble stays in operation after the launch of the JWST. Probably until funds run out.

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rOZZ
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Latest news

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rOZZ
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I find it stimulating that we are all looking for a way off this Planet. :)

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ᴡᴇ ᴅᴀʀᴇsᴀʏ ᴀʙᴏᴜᴛ ᴛʜᴇ ᴘᴀsᴛ ᴛʜᴀᴛ ɪᴛ ɪs ғɪɴɪᴛᴇ ʏᴇᴛ ᴡᴇ ᴅᴀʀᴇ ɴᴏᴛ ʙᴇʟɪᴇᴠᴇ ᴛʜᴇ ғᴜᴛᴜʀᴇ ɪs.

James Webb's Eye in the Sky Aids Human Eyes with LASIK Tech | Space 
https://www.space.com/james-webb-technology-improve-human-vision.html
LASIK: Laser-Assisted In-Situ Keratomileusis (vision correction laser surgery)

I find it stimulating that we are all looking for a way off this Planet. :)

The way things are going it looks that not putting all our eggs in the same basket seems to be one of the best ideas ever indeed :/

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Apr 3, 1999 - May 3, 2020

I find it stimulating that we are all looking for a way off this Planet. :)

LOL!!

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rOZZ
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I find it stimulating that we are all looking for a way off this Planet. :)

LOL!!

Where would we go and how would we get there ?

The JWST has been fully assembled at the Northrop-Grumman plant in Redondo Beach, CA. It will undergo further testing. Launch is planned in 2021.
Tullio

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And here's a link to the BBC article about the assembly
https://www.bbc.co.uk/news/science-environment-49504866

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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

And here's a link to the BBC article about the assembly
https://www.bbc.co.uk/news/science-environment-49504866

thanks for that link Rob :)
Launch Date: Webb will launch in 2021.
i hope i can live to 2021 to see the Launch.

Launch Location
Webb will be launched from Arianespace's ELA-3 launch complex at European Spaceport located near Kourou,
French Guiana. It is beneficial for launch sites to be located near the equator
the spin of the Earth can help give an additional push.
https://jwst.nasa.gov/content/about/launch.html
https://www.jwst.nasa.gov/

Really looking forward to the launch myself as well. The JWST is a treasure.

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rOZZ
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Woohoo!! The JWST is launched on on the Ariane flight VA256 on December 25th 2021. Go JWST!!!!

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rOZZ
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First pictures of the JWST!

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rOZZ
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