The James Webb Space Telescope will study every phase in the history of our Universe, ranging from the first luminous glows after the Big Bang, to the formation of solar systems capable of supporting life on planets like Earth, to the evolution of our own Solar System.

The launch date was Saturday, December 25, 2021 at 12:20 PM (UTC).

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Provider	Arianespace
Vehicle	Ariane 5
Location	ELA-3 Guiana Space Centre French Guiana
All dates and times should be submitted in UTC timezone. Use Estimated Date if you don't know the official launch date and time; otherwise, use Window Opens/Closes and/or Planned T-0, which will override the Estimated Date.
— Estimated Date —
Date
— Window Opens —
Date
Time
Launch Date	Saturday, December 25, 2021
Launch Time	12:20 PM (UTC)
Launch Time (Pad)
— Planned T-0 —
Date	Saturday, December 25, 2021
Time	12:20 PM (UTC)
— Window Closes —
Date	Saturday, December 25, 2021
Time	12:20 PM (UTC)
COSPAR ID	2021-130

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