They are the coal cars in a freight train of planets. But finding asteroid belt anomalies that would convincingly point to the handiwork of space aliens would be very tricky. First, we would need to presume that the civilization was so … Second, the system might look odd due to the disassembly of its larger asteroids. Finally, large quantities of dust from mining might give the belt an unusual temperature distribution. The researchers predict that persistent mining over … …

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Asteroid Forensics May Point to Alien Space Miners « Xenophilia …