EOLOGY The deepest that humans have ever built and stayed below Earth’s surface is some 4000 metres, a record held by
The Sun’s Shield Protects Us
1 Charged particles – primarily electrons and protons – flow out from the Sun’s surface. The solar wind acts as a bulwark, slowing particles from interstellar space at a distance of approximately 18 billion km from the Sun. 2 Tiny dust particles and