There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
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If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
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Sound doesn't travel in space.
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