You can jump into a sector with a spaceship. There, you can explore and make many discoveries.
A sector can contain various objects such as asteroids, planets, moons, nebulae, debris fields, and much more.
With the help of the Star Map, you can scan for sectors and jump there with a ship.
Nearby sectors are usually smaller and less dangerous. The farther a sector is, the larger it can be and the more dangers it may present. At the same time, there are more valuable resources and more interesting discoveries to be made.