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On December 18, 2020, the British newspaper The Guardian leaked the news about the detection of a radio signal that would come from the Proxima Centauri star. However, astrophysicists called for caution while the signal is being studied, because it might have natural origins.


The US Pentagon has a 180 days (6 months) deadline to issue a detailed report on unidentified aerial phenomena to the Senate Select Committee on Intelligence, led by Republican senator for the state of Florida Marco Rubio.


On Monday, December 21, a spectacular conjunction of Jupiter and Saturn, the largest planets of the Solar System, took place. A conjunction of such magnitude between those two planets had been last seen in July, 1623.