What's it like outside the earth?

Outside the earth is the atmosphere around the surface of the earth. The earth and seven other planets revolve around the sun, forming the solar system. From near to far, it is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Outside the solar system, there are many galaxies the same size as the solar system, which we call extragalactic galaxies. The Milky Way and extragalactic galaxies make up the total galaxy. The entire galaxy ranges from1500 million to 20 billion light-years that we can observe now. In the space of these celestial bodies, there is not a complete vacuum, and there are still many electromagnetic waves. So it's just a high vacuum.