An illustration of a telescope.
The James Webb Space Telescope is on track to launch.
NASA officials wrote in a post last week that further testing on the observatory has confirmed that the liftoff is still planned for December 22.
Over the years, the $9.8 billion has experienced technical delays and funding issues. It was delayed again earlier this month during its final preparations for launch.
NASA needs a new telescope to find Earth's twin.
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NASA reported that a band that holds the launch vehicle to the telescope had suddenly released, causing the telescope to vibrate. The observatory's launch date was pushed back to December 18 because of the incident.
A week ago, a post on the website reported that more testing had been done following the incident.
The agency wrote in a post that no observatory components were damaged in the incident.
NASA and its partners ran a consent to fuel review to begin tanking up the Arianespace Ariane 5 rocket. Fueling is expected to last 10 days.
After reaching space, the journey will begin. It will take a month to get to the location known as a Lagrange point, which is a stable location in space.
The telescope's "early release science programs" include a range of programs in planets, the solar system, galaxies, black holes, stellar physics and star populations.
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