Space.com :
What's next for Europe's Euclid 'dark universe' telescope
The space observatory will now spend the next month commuting to the sun-Earth Lagrange point 2, which is about 1 million miles (1.5 million km) away from our planet on the opposite side of the sun.

https://www.space.com/euclid-dark-matter-universe-what-next-after-launch