![All About Space](https://www.paziran.net/wp-content/uploads/2023/06/uzay-astronot-1535263-600x400.jpg)
All About Space
How Many Travelers Are There in Space? Currently, four planets in the Solar System (Earth, Mars, Venus and Mercury) and Pluto, which is considered a dwarf planet, are planets with a known atmosphere and surface. Apart from these, some other moons such as Jupiter’s moon Europa and Saturn’s moon Enceladus are thought to have liquid…