NASA to launch Hubble servicing mission by 2028
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NASA announced plans to launch a servicing mission to the Hubble Space Telescope by 2028, aiming to extend its operations for another decade. The decision follows a review of Hubble's declining orbit and aging instruments, which have raised concerns about its continued functionality. The mission will involve a robotic spacecraft to boost Hubble's altitude and replace critical components.
The Orbital Decline
Hubble's orbit has been decaying at an accelerating rate due to increased solar activity, dropping from 540 km in 2009 to 510 km in 2026. Without intervention, the telescope would re-enter Earth's atmosphere by 2037. NASA's 2024 Orbital Debris Mitigation Plan identified Hubble as a priority for servicing to avoid uncontrolled re-entry.
The Servicing Plan
The mission, tentatively named 'Hubble Reboost', will use a robotic spacecraft developed by SpaceX under a $1.2 billion contract awarded in 2025. The spacecraft will dock with Hubble, perform a controlled burn to raise its orbit to 560 km, and replace gyroscopes and batteries. NASA expects the mission to cost $2.5 billion total, including development and operations.
Scientific Justification
Hubble remains the only telescope capable of ultraviolet observations, crucial for studying star formation and galaxy evolution. In 2025, Hubble contributed to 347 peer-reviewed papers, including key findings on exoplanet atmospheres. The telescope's public support, with over 1.2 million social media followers, also factored into the decision.
What's Next
NASA is set to finalize the mission design by mid-2027, with a launch window opening in late 2028. It remains unclear whether the robotic servicing will fully restore Hubble's capabilities, as some instruments may be beyond repair.
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NASA to launch Hubble servicing mission by 2028