No Pluto, it's not you. Go back to being the marvel of our recent far-flung photographic efforts. Astronomers do think there might be a ninth planet in our solar system though, but way beyond even the bounds of our dwarf-planet friend. We haven't seen it yet, but evidence in the …
Read More »Alien star gave our solar system a fly-by 70k years ago
Although one of the common ways sci-fi writers like to make their planets more exciting is adding a second sun to the mix, it's not something we're ever likely to experience here on Earth. However our ancestors might have, as 70,000 years ago, another star did a fly-by of our …
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