210. The Visitors (Part 1) B1 B2 story

Words to explain: extraterrestrial - from another planet alien - life from another planet life forms - beings which are living electro-magnetic field - this surrounds the Earth and protects us from harmful rays from space orbit - going around the sun etc. meteorite - an object that may crash into the Earth evolve / evolution - life that grows and changes over long periods of time cosmic - from the universe comet - a huge ball of us that flies through space B2 phrases to listen for. What is th...