Today marks the beginning of the outgassing process for the James Webb Space Telescope, the most powerful telescope ever created! Outgassing is an important step in the construction of the telescope and is necessary to ensure that the telescope is airtight and can withstand the harsh environment of space. The process involves filling the telescope with nitrogen gas in order to flush out any remaining air and other contaminants. This process is expected to take several weeks, but will ensure that the telescope is ready for its launch in October 2023.

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source: Phys.org