Preparing for the Celestial Spectacle: T Coronae Borealis’ Upcoming Nuclear Detonation

An astronomical event of great significance is set to take place in the near future, as the star T Coronae Borealis (T CrB) is predicted to undergo a thermonuclear detonation on its surface. This explosion, which happens roughly every 80 years, will make the star visible to the human eye without any aids, providing a sight not seen since the 1940s.

The chart below shows the perspective from London looking south-south-west around 2300 BST, indicating the specific location to monitor for any changes. When T CrB erupts, it is expected to shine as brightly as Alphecca, the brightest star in the Corona Borealis constellation, also known as the northern crown.

The Astronomical League has encouraged individuals to sketch the constellation now and again when the star eventually erupts. This practice will aid in pinpointing the exact time when the eruption’s light reaches Earth. Although technically already occurred, T CrB is located an immense 2,600 light years away, meaning that its light has been traveling through space for centuries. It’s just a matter of weeks or even days before we witness it here on Earth.

For those observing from Sydney, Australia, the constellation will reach its highest point due north around 2100 AEST. This positioning will provide an optimal view of this celestial event and allow for a unique perspective on this rare occurrence.