The highly anticipated launch of the James Webb Space Telescope is facing yet another delay before it can lift off the launchpad.
Heralded to be the premier space science observatory of the next decade, the telescope is now expected to launch on December 24 from Europe’s Spaceport in French Guiana.
Teams are working on “a communication issue between the observatory and the launch vehicle system,” NASA shared in an online post. The agency will provide an update about the telescope on Friday.
The telescope, initially announced to launch in 2018, has endured years of delays, including a combination of factors brought on by the pandemic and technical challenges.
Most recently, the launch date of December 18 was pushed to December 22 after an incident occurred during launch preparations in November.
As technicians were preparing to attach the telescope to the upper stage of the Ariane 5 rocket that will be used during the launch, “a sudden, unplanned release of a clamp band caused a vibration throughout the observatory,” according to the agency.
After testing and reviewing the observatory, teams concluded that the telescope was not damaged, and fueling was completed on December 3. The telescope was placed on top of the Ariane 5 rocket on December 11.
What the telescope will do
Considered to be the world’s most powerful complex space observatory, Webb will answer questions about our solar system, study exoplanets in new ways and look deeper into the universe than we’ve ever been able to. Webb will peer into the very atmospheres of exoplanets, some of which are potentially habitable, and could uncover clues in the ongoing search for life outside of Earth.
The telescope comes equipped with a mirror that can extend 21 feet and 4 inches (6.5 meters) — a massive length that will allow the mirror to collect more light from the objects it observes once the telescope is in space. The more light the mirror can collect, the more details the telescope can observe.
The mirror includes 18 hexagonal gold-coated segments, each 4.3 feet (1.32 meters) in diameter.
It’s the largest mirror NASA has ever built, the agency said, but its size created a unique problem. The mirror was so large that it couldn’t fit inside a rocket. So they designed the telescope as a series of moving parts that can fold origami-style and fit inside a 16-foot (5-meter) space for launch.
Webb will act as an infrared detective, detecting light that is invisible to us and revealing otherwise hidden regions of space, according to NASA.
The concept for the telescope was first imagined as a successor to Hubble at a workshop in 1989, and construction on Webb first began in 2004. Since then, thousands of scientists, technicians and engineers from 14 countries have spent 40 million hours building the telescope.
Now, Webb could help researchers understand the origins of the universe and begin to answer key questions about our existence, such as where we came from and if we’re alone in the cosmos.
Once the telescope launches, it will travel for about a month until it reaches an orbit about 1 million miles (1.6 million kilometers) away from Earth. Over the course of 29 days, Webb will unfold its mirrors and unfurl a protective sunshield. This process involves thousands of parts that must work perfectly in the right sequence.
Fortunately, each step can be controlled from the ground in case there are issues.
And then it will go through a period of setting up shop in space that lasts for six months, which involves cooling down the instruments, alignment and calibration. All of the instruments will go through a checkout process to see how they are functioning.
Then, it will begin to collect data and its first images later in 2022. Thousands of scientists have been waiting for years to see what Webb can show us.
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