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Pluto is about forty times the distance from the Sun as Earth. But the Solar System is over 50000times that length across, meaning it could be hiding some huge secrets. That’s now looking like a small but real possibility.
In recent years, astronomers have discovered a bunch of planets located at least 100 astronomical units, or the distance from the Sun to the Earth, away from their host stars. These planets are gas giants – they would have to be for us to see them at all – so this is something very different the dwarf planets like Pluto and Eris discovered in our solar system’s Kuiper Belt and beyond.
Filed under: Science & Technology
