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NASA delays launch of James Webb Space Telescope again

The next-generation space observatory won't lift off any earlier than Dec. 24, NASA says.

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James Webb telescope in "full bloom"

A 2017 image of the James Webb telescope in "full bloom." The 18-segmented gold mirror is designed to capture infrared light from the first galaxies that formed in the early universe and to help us peer inside dust clouds where stars and planetary systems are forming today.

NASA/Desiree Stover

The launch of the next-generation James Webb Space Telescope, a marvel that will peer into the past and probe the origins of our universe, has been delayed again, NASA announced Tuesday afternoon. The telescope had been scheduled for Dec. 22, but a communications issue will prevent it from lifting off before Dec. 24, the US space agency said.

"The James Webb Space Telescope team is working a communication issue between the observatory and the launch vehicle system," NASA spokesperson Alise Fisher said in a statement, adding that there will be more information about the new launch date by Friday.

A joint project of NASA, the European Space Agency and the Canadian Space Agency, James Webb is the next generation of space telescope, designed to peer back into the earliest universe. NASA hopes it and the aging Hubble Space Telescope will operate at the same time, but first Webb needs to launch safely and make it through a complicated and lengthy deployment process. 

The telescope is incredibly complex, which has led to a series of delays. It must be folded up like origami for launch and will open itself back up once it's safely in space. Earlier in the development of the James Webb Telescope, NASA had hoped to launch it as early as 2007. NASA has already delayed the launch three times this year.

The telescope is set to launch on an Ariane 5 rocket from Europe's Spaceport in French Guiana.

Watch this: James Webb Space Telescope: NASA's powerful space observatory, explained