 On July 1st, 2023, the European Space Agency launched a new space telescope named Euclid. Its mission is to explore the composition and evolution of the dark universe. Euclid will explore how the universe has expanded and how structure has formed over cosmic history, revealing more about the role of gravity and the nature of dark energy and dark matter. We'll close our 2023 review with its first five images. This image shows 1,000 galaxies belonging to the Perseus cluster, and more than 100,000 additional galaxies further away in the background, each containing up to hundreds of billions of stars. At approximately 1,375 light-years away, in the vast Orion molecular cloud, the horsehead nebula is the closest giant star-forming region to Earth. The galaxy I see 342 is nicknamed the Hidden Galaxy, because it's difficult to observe, due to the fact that it lies behind the dusty disk of our Milky Way. The dust, gas and stars obscure our view. NGC 6822 is an irregular dwarf galaxy. It's just 1.6 million light-years from Earth. Here's globular cluster NGC 6397. It's a collection of hundreds of thousands of stars held together by gravity, located about 7,800 light-years from Earth. It is the second closest globular cluster to us. I expect that the 2024 review will contain a number of Euclid's findings.