Fire - So JWST has been launched "underspeed", at a lower velocity than needed to make it to its spot at Earth-Sun L2. This was intentional: an overspeed would require Webb to maneuver itself into a position that would permanently damage its optics to fire its thruster to slow down.

4:59am PST - December 25th, 2021

So JWST has been launched "underspeed", at a lower velocity than needed to make it to its spot at Earth-Sun L2. This was intentional: an overspeed would require Webb to maneuver itself into a position that would permanently damage its optics to fire its thruster to slow down.

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JWST launched before Ares V---erm, I mean, SLS! (@jaredhead)