National Aeronautics and Space Administration (NASA) and SpaceX have agreed to study the feasibility of awarding the latter a contract to boost the Hubble Space Telescope to a higher orbit, with a goal of extending its lifespan, the US space agency said on Thursday.
The renowned observatory has been operating since 1990, at
about 540km above the Earth, in an orbit that slowly decays over time.
Hubble has no on-board propulsion to counter the small (yet
still present) atmospheric drag in this region of space, and its altitude has
previously been restored via Space Shuttle missions.
The proposed new effort would involve a SpaceX Dragon
capsule.
"A few months ago, SpaceX approached Nasa with the idea
for a study whether a commercial crew could help reboost our Hubble spacecraft,"
Nasa's chief scientist Thomas Zurbuchen told reporters, adding that the agency
had agreed to the study at no cost to itself.
He stressed there are no concrete plans at present to
conduct or fund such a mission until the technical challenges are better
understood.
One of the main obstacles would be that the Dragon
spacecraft, unlike the Space Shuttles, does not have a robotic arm, and would
need modifications for such a mission.
SpaceX proposed the idea in partnership with the Polaris
Program, a private human spaceflight venture led by payments billionaire Jared
Isaacman, who last year chartered a SpaceX Crew Dragon to orbit the Earth with
three other private astronauts.
"This would certainly fit within the parameters we
established for the Polaris program," Isaacman said in response to a
question about whether reboosting Hubble could be the goal for a future Polaris
mission.
When asked by a reporter whether there might be a perception
that the mission was contrived in order to give wealthy people tasks to do in
space, Zurbuchen said:
"I think it's only appropriate for us to look at this
because of the tremendous value this research asset has for us."
Arguably among the most valuable instruments in scientific
history, Hubble continues to make important discoveries, including this year
detecting the farthest individual star ever seen — Earendel, whose light takes
12.9 billion years to reach us.
It is currently forecast to remain operational throughout
this decade, with a 50 per cent chance of de-orbiting in 2037, said Patrick
Crouse, Hubble Space Telescope project manager.