This Telescope will unfold when it is very far from Earth, about half way between the Earth and the moon. It can't be fixed by astronauts if it stops working because it will be outside the Earth's magnetic field so there is nothing to shield the astronauts from solar flare particles and radiation. When people went to the moon in the 70s, they didn't know about the danger of deep space radiation and the vital protection of the Earth's magnetic field; they didn't know they could have died in less than an hour if they were hit by a solar flare.
The reason they want to put a another telepscope in space is because the Earth's atmosphere blocks many parts of the light spectrum so we can't see most of the infra red light and ultra violet light from distant stars and galaxies.
I wonder what they will see.
