T Coronae Borealis (T CrB), also known as the 'Blaze Star,' is a recurrent nova expected to undergo an outburst soon. Historically, it has brightened to magnitude 2.0 or 3.0 during such events in 1866 and 1946 respectively.

This market resolves to 'Yes' if T CrB reaches magnitude 5.0 or brighter before December 14, 2025 (11:59 pm ET), as reported by reputable astronomical sources such as the American Association of Variable Star Observers (AAVSO).

https://en.wikipedia.org/wiki/T_Coronae_Borealis