This is how the James Webb telescope points so accurately – checks a star 16 times per second to update mirror steering. Could see an eye blink 500 km away. Made in Canada!
Details: https://t.co/tiNHhEE2iv @csa_asc @COMDEV_Intl pic.twitter.com/dryJ9MinSB

— Chris Hadfield (@Cmdr_Hadfield) February 20, 2022

The 18 random dots featured in this video might not look like much, but they represent a big step forward in #NASAWebb’s 3-month mirror alignment process and its quest to #UnfoldTheUniverse: https://t.co/YVrW6RTvOy

Let’s connect the dots with a thread ⬇️ pic.twitter.com/yT8Chn1LSb

— NASA Webb Telescope (@NASAWebb) February 11, 2022

Bonus image! When it’s time to focus, sometimes you need to take a good look at yourself.

This “selfie” taken by Webb of its primary mirror was not captured by an externally mounted engineering camera, but with a special lens within its NIRCam instrument. #UnfoldTheUniverse pic.twitter.com/XtzCdktrCA

— NASA Webb Telescope (@NASAWebb) February 11, 2022

To study better the interstellar object 1I/’Oumuamua: a proposed mission to be launch in 2028 with a 4 gravitational assistences and a Jupiter Oberth Manoeuvre (JOM) reaching the asteroid in 2054, with an arrival speed of 18 km s−1: https://t.co/HuKV9b5Uj0
Illustration: NASA pic.twitter.com/smSrubhnLb

— Xavi Bros (@Xavi_Bros) January 29, 2022