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The Sun and Proxima Centauri and most of the stars you've heard of orbit the centre of the Milky Way galaxy like children peacefully riding a carousel (with some weirdness caused by dark matter that we don't need to get into). Now, imagine if a few toddlers were sprinting and shrieking across the peaceful scene. Who sent these nightmares? In the case of stars, scientists think they could have come from another galaxy.

Predicting the future is near impossible -- but that doesn‘t stop us all from having a red hot go. Human beings have been predicting the future since the beginning of history and the results range from the hilarious to the downright uncanny.

One thing all future predictions have in common: they‘re rooted in our current understanding of how the world works. It‘s difficult to escape that mindset. We have no idea how technology will evolve, so our ideas are connected to the technology of today.

The Sun and Proxima Centauri and most of the stars you've heard of orbit the centre of the Milky Way galaxy like children peacefully riding a carousel (with some weirdness caused by dark matter that we don't need to get into). Now, imagine if a few toddlers were sprinting and shrieking across the peaceful scene. Who sent these nightmares? In the case of stars, scientists think they could have come from another galaxy.