NASA Science: Webb Launch
NASA
Supports December 25, 2021 at 7:20 a.m. EST / 12:20 UTC, Ariane 5, Webb, Europe’s Spaceport, successful launch and NASA/ESA/Arianespace roles.
詹姆斯·韦布空间望远镜发射任务
On December 25, 2021, an Ariane 5 launched the James Webb Space Telescope from the Guiana Space Centre, sending the international infrared observatory toward the Sun–Earth L2 point.

The James Webb Space Telescope was developed through cooperation among NASA, ESA and the Canadian Space Agency. An Ariane 5 launched it from the Guiana Space Centre, and official sources confirm successful launch and separation before its journey to Sun–Earth L2.
Reviewed mission events will appear here.
No reviewed schedule changes have been recorded.
Sources are a visible part of the mission record, not a footnote.
VerifiedLast updated · Sep 21, 2026, 5:52 PMNASA
Supports December 25, 2021 at 7:20 a.m. EST / 12:20 UTC, Ariane 5, Webb, Europe’s Spaceport, successful launch and NASA/ESA/Arianespace roles.
0 people publicly recorded a witness. Records are self-recorded, not platform verification.
This feature is temporarily unavailable. Public browsing remains open.