Mountain landscape with moon phases

Space and the cosmos refer to the vastness of the Universe and all the celestial bodies within it: stars, planets, moons, galaxies, comets, and many other objects. Their study falls primarily under astronomy, a science that began with humanity's earliest observations of the sky. Since ancient times, civilizations have observed the stars and the movements of celestial bodies in order to better understand the Universe around us.

A star is a hot, glowing sphere of gas in space that gives off light.The Sun is a star, and many others are visible at night.People have long used stars to navigate and tell time.

A mountain is a high landform that rises above the land around it.It is made of rock and soil and often forms when parts of the ground push together or when lava from volcanoes hardens.A mountain can be found on every continent, and people use it for hiking, grazing animals, mining, and as a source of river water.

The Moon is Earth's only natural satellite.It is the fifth-largest satellite in the Solar System and the largest relative to the size of its planet.Its gravity causes ocean and body tides and slightly lengthens Earth's day.

A lake is a large body of water surrounded by land, typically found in various regions around the world.They often support diverse ecosystems and provide habitats for a wide range of wildlife.Additionally, many lakes serve as key resources for human activities, such as recreation, fishing, and freshwater supply.