Hubble continues to observe the Universe, but questions about its future are also being raised much closer to Earth. On 29 October 2026, NASA launched a consultation with companies to explore the possibility of servicing the telescope. The stakes go beyond replacing an instrument: they concern its altitude, its service life and, ultimately, managing its re-entry into the atmosphere.
This process does not mean that a repair mission has already been decided. It opens a phase in which available capabilities will be assessed. To understand what may be at stake, three operations often grouped under the same term need to be distinguished: extending an orbit, servicing an observatory and planning for its end.
A consultation, not yet a mission
NASA’s request for information covers several possibilities: raising Hubble to a higher orbit, working on the telescope to improve its capabilities, or preparing a controlled re-entry when it reaches the end of its operational life.
Companies can respond until 30 November 2026. At this stage, the consultation has selected neither a contractor nor a funded mission. Its purpose is to shed light on the available options, their constraints and their feasibility.
The distinction matters. An announcement of a launch would include a committed timetable and mission architecture. Here, NASA is first asking industry what it could propose. The responses may clarify the range of solutions, but they do not guarantee that any intervention will take place.
Why altitude is becoming an issue
A telescope in low Earth orbit is not in a vacuum entirely devoid of matter. Atmospheric drag eventually reduces its altitude. Hubble has no onboard propulsion system that would allow it to maintain its own orbit.
According to the estimate published by NASA, re-entry could take place in 2033 or 2034. The agency therefore estimates that an intervention should take place by 2032. These years are projections and a preparation deadline, not a date already set for a launch.
Raising the orbit would address this trajectory problem. It would not automatically replace ageing equipment. Conversely, repairing an instrument would not be enough to correct the loss of altitude. Any potential mission will need to specify what services it would actually provide.
It is also important to distinguish the telescope’s orientation from its orbital movement. The pointing systems allow it to target an astronomical object; they are not an engine capable of raising its orbit. Hubble can therefore continue to make observations while its orbital lifespan remains an issue.
An observatory already transformed in space
Since its launch in 1990, Hubble has received five servicing visits. The last, in May 2009, included the installation of new instruments, repairs to existing instruments and the replacement of several essential pieces of equipment.
This history explains why the idea of an intervention has particular significance for Hubble. The observatory has not remained frozen in its original configuration. Its scientific journey has also involved these successive upgrades.
But the existence of earlier shuttle missions does not provide a blueprint for a new commercial visit. The means of access and intervention need to be studied for the project under consideration. The current consultation does not yet make it possible to describe a team, vehicle or procedure as though any had been chosen.
The ability to continue observing also depends on how the available equipment is managed. NASA explains that operating with a single gyroscope relies on other sensors to maintain pointing. This is a response to an operational constraint, distinct from an operation on the orbit.
Why James Webb does not make Hubble redundant
The arrival of James Webb may give the impression that one major telescope is replacing its predecessor. Their complementarity, however, is more interesting than this apparent succession.
Hubble observes in ultraviolet, visible light and part of the near-infrared. Webb works in the near- and mid-infrared. These ranges do not reveal exactly the same phenomena or the same details.
Infrared light is particularly useful for studying regions where dust obstructs the view in visible light. It is also essential for observing light from distant galaxies that has shifted towards longer wavelengths. This does not remove the value of Hubble’s visible-light and ultraviolet observations.
The two observatories also occupy different environments: Hubble orbits Earth, while Webb is near the Lagrange point L2, about 1.5 million kilometres away. Their locations mean that the same interventions are not possible for both. It is therefore not possible to infer a shared servicing policy simply because they are both space telescopes.
What the next decisions will need to clarify
Hubble’s scientific value and the feasibility of an intervention are two related but distinct questions. A new mission would need to specify what it would extend: the time spent in a usable orbit, certain instrument capabilities, or both.
Planning for the end of the mission is also part of the consultation. It is a reminder that operating an observatory means thinking about what happens to it after its final observations, and not only about the discoveries to come.
For now, then, the news is that industry is being invited to consider options for an instrument that remains active. The responses expected at the end of November will be one step. Choosing a mission, its capabilities and its timetable would be another. Hubble retains a distinct scientific role; how to extend that role remains to be decided.
Sources
- NASA, consultation on potential commercial servicing for Hubble.
- NASA, Hubble’s history and servicing missions.
- ESA, the differences between Hubble and Webb.
Archive photo: Hubble photographed from the space shuttle Atlantis in May 2009.
