Linked Questions

7 votes
1 answer
300 views

Suppose Hubble needed to be fixed by replacing an accessible module again and NASA called for help, what are the most likely mission proposals?

Background Hubble has had at least a few troubling issues that were resolved from the ground in recent years, a summary can be found in Engadget's NASA struggles to fix a Hubble Space Telescope ...
10 votes
2 answers
863 views

Besides HST, JWST and stations, are there any examples of satellites designed for service in space?

update: I've just read these intriguing first sentence in the recently published (and paywalled) Aviation Weekly article No Second Chances On Webb Telescope Deployment: NASA has no plans to service ...
18 votes
7 answers
4k views

Is there something inherently more difficult about servicing satellites in the 2nd Sun-Earth Lagrangian point?

There are several questions already asked on here about the potential for servicing the James Webb Space Telescope. This question asks what happens if the JWST needs repair. Basically, there are no ...
6 votes
1 answer
540 views

Question: Does JWST have hardware that could be used as a docking fixture by repair spacecraft?

Context: JWST is considered un-repairable in its current L2 location for a number of reasons: Diagnosis is difficult since JWSR has no “selfie” capability. This makes planning for any repair mission (...
14 votes
3 answers
1k views

A way to overcome fuel limits on JWST and its operational lifetime; "clip-on" propulsion systems in development that might work in the future?

I was wondering: Although it has been widely publicised that the JWST has a lifetime limit. Is it not it possible given current technology regarding drones and the JWST itself as proof of concept to ...
13 votes
1 answer
5k views

What kind of thrusters will the James Webb Space Telescope use for station keeping?

Question is fairly self-explanatory, but I couldn't find an answer on Google. I would expect ion thrusters because of their efficiency. Thanks!
10 votes
2 answers
1k views

Is Landsat-7's propellant resupply port "robot-ready"? (Restore-L mission)

update 2020-11-20: OSAM-1 (Formerly Restore-L) Continues to Make Progress, Fuel Tank Installed note: the recent 2019 news Northrop's satellite refueling spacecraft launches on October 9th which is ...
8 votes
1 answer
1k views

To what extent could JWST continue to be useful after the propellant runs out?

I see a similar question answered, but this is perhaps more specific. There's a lot of description about the James Web Space Telescope (JWST) operation during its planned mission. But I gather JWST ...
4 votes
7 answers
4k views

Would it have been cheaper and/or faster to put a James Webb-like Space Telescope on a balloon instead of a rocket?

I've just noticed the following items: CNET: NASA to send stadium-size balloon skyward to study the cosmos JPL/NASA News: NASA Mission Will Study the Cosmos With a Stratospheric Balloon Even in 2020 ...
13 votes
1 answer
934 views

Why Orion can't be used to service JWST?

Hubble Space Telescope is a marvel of astronomical tools - particularly judging by how much it moved the science. It took a lot of fixes along the way, which certainly prolonged its useful life. Its ...
8 votes
1 answer
669 views

How will JWST be serviced?

Hubble, besides the initial high-profile COSTAR, was upgraded many times giving essentialy a new instrument with the same heavy/expensive glass. It was set in LEO for that purpose even though it has ...
21 votes
3 answers
4k views

The JWST - What happens if/when it breaks?

The James Webb Space Telescope (JWST) project could be fantastic, It has the promise of seeing farther than Hubble, almost to the beginning of our space/time. But, orbiting at L2 - while closer by ...