Long John Silver (his real name wasn’t Long John Silver but he was known as Long John Silver by his closest associates) had given the exact location of Planet Earth. He had stumbled across Planet Earth while cruising the Universe and thought it to be a fairly fascinating place. (It’s where he had picked up the name Long John Silver from. It had tickled his fancy).
Now a group from Long John Silver’s planet were travelling in a space pod to Planet Earth. The voyage would take just over eight months, which was a phenomenally short time given the distance to get to Earth. Speed is of the essence in space travel.
Already two of the men on board had given birth to babies. (These aliens were sort of like Planet Earth’s sea horses where the males did the gestation).
How exciting to be nearing Planet Earth! Conditions on Earth were so similar to their own that they could simply step off their space pod and be assimilated incognito into earthly daily life (apart from the men having babies, which would be hidden if it happened).
They reached the location stipulated by Long John Silver. There was nothing there. Planet Earth had self-annihilated. It had blown itself up. It was so disappointing for the tourists.