Astronomers predict that a binary star system in the constellation Corona Borealis may be on the verge of exploding as a supernova. The system, called T Corona Borealis (TCrB), has erupted approximately every 80 years and was last observed doing so in 1946. If it does erupt, it should become visible to the naked eye for a few nights.
The star system consists of a white dwarf and a red giant star, with the white dwarf accumulating material from the red giant until it finally triggers an explosion. This explosion will cause a sudden increase in brightness, allowing the star to become visible to the naked eye from Earth.
Observations suggest that T CrB is on the verge of erupting, with variations in its brightness indicating the imminent arrival of the event. A recent study published in Research Notes of the American Astronomical Society predicts that the eruption will occur on March 27 or November 10, 2025, or June 25, 2026.
Astronomers have closely monitored T CrB since 2023, and its dimming brightness has been tracked. The star should become visible in the night sky an hour after sunset, making it easy to spot with the naked eye.
To locate T Corona Borealis, look for the constellation Corona Borealis, which rises in the east about three hours after sunset. Find bright stars Arcturus and Vega, then look between them for the curve of seven stars that marks the constellation’s handle.
Source: https://www.forbes.com/sites/jamiecartereurope/2025/03/20/a-star-may-explode-next-week-in-once-in-80-years-event—what-to-know