That's when a new star will rise in the east and dominate the sky. This is the result of a collision of two stars that happened 1800 years ago.
Before their meeting the two stars were too dim to be seen by the naked eye, but in 2022, the newly formed Red Nova will burn so brightly in the constellation Cygnus that everyone will be able to to see it...Some information on how the prediction was made is at The Telegraph. Embedded image cropped for size.
For around six months the Boom Star will be one of the brightest in the sky before gradually dimming, returning to its normal brightness after around two to three years...
The forecast was made officially at a press conference on Friday, all the more poignant because it coincided with the epiphany, which commemorates the visit of the Three Wise Men, who followed the star to Bethlehem to witness the birth of Jesus.