It has been years in the making but the team working on Nasa's James Webb Space Telescope are carrying out the final preparations before it launches into orbit in around six weeks' time.
Nov 10, 2021
Engineers around the world, including a team from the UK, have been working on the JWST, which will be able to look back in time to just a few hundred million years after the Big Bang - (which was thought to have happened more than 13.5 billion years ago).
The James Webb Space Telescope (JWST) is a super-powerful version of other space telescopes like the Hubble.
It's a mirror made of 18 segments specially designed to capture infrared light from the first galaxies that formed in the early universe.
It will also be able to see stars and planets being discovered beyond our solar system and learn more about how they were made.
The JWST will be launched into orbit on an Ariane rocket from French Guiana in South America in December.
The planning of the launch is a meticulous operation as the telescope will have to be "folded" neatly into a rocket, and "unfolded" whilst it zooms around the Earth.
If all goes to plan, the telescope is basically a big mirror bounces light from space back into special instruments that can identify objects millions of light years away.