Space is the vast, seemingly endless expanse that exists beyond our planet, Earth. It is where all the stars, planets, and galaxies reside. In space, there is no air, which means sound cannot travel, and it is incredibly cold. The beauty of space is often seen in the twinkling of stars and the glow of planets like Mars and Jupiter. Exploring space has fascinated humans for centuries. With the help of advanced technology, we have sent satellites and spacecraft to study distant worlds and gather information about the universe. Astronauts travel to space to conduct experiments and learn more about how living in such an environment affects the human body.