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New type of star system? Mysterious radio signal puzzles astronomers (photo)
The brightness of the star changes over a period of 21 days
NASA: Swarm of asteroids headed in the direction of Earth
The largest of these is roughly the size of the Great Pyramid of Giza
China’s enormous Radio Telescope is already picking up mysterious signals
The mysterious Fast Radio Bursts (FRBs) are energetic radio signals that are much louder than pulsars despite being much further away