The James Webb telescope.

[Bobby]

Update from 14-Jan Friday.

At full speed, it takes about a day to move all the segments by just 1 millimeter — about the same speed at which grass grows!

While this may not be the most exciting period for Webb, taking our time is how we’ll get closer each day to our goal of mirror alignment.

And there are 18 mirrors to align -
it seems almost impossible:

https://webb.nasa.gov/content/observato ... index.html

Why? Massive mirrors are hard to make, so the newer telescopes tend to use smaller ones put together. They've also invented sort of flexible mirrors which are then controlled to take into account atmospheric disturbances.

Well it's obviously possible to use 18 mirrors in space but
it has never been proven yet.

Good thing NASA is full of people smarter than you or I in this field.

You wouldn't get a job at NASA without a PhD in the particular field they need.

[Prime Minister for Canyons]

And there are 18 mirrors to align -
it seems almost impossible:

https://webb.nasa.gov/content/observato ... index.html

Why? Massive mirrors are hard to make, so the newer telescopes tend to use smaller ones put together. They've also invented sort of flexible mirrors which are then controlled to take into account atmospheric disturbances.

Well it's obviously possible to use 18 mirrors in space but
it has never been proven yet.

Good thing NASA is full of people smarter than you or I in this field.

You wouldn't get a job at NASA without a PhD in the particular field they need.

Boy you don't say. Thanks Captain Obvious.

[Bobby]

A great video is here: