What is a "Blaze Star" and when will it be visible in 2024?

Astronomers and stargazers are poised for a celestial spectacle as a rare nova explosion, known as the “Blaze Star” or T Coronae Borealis (T CrB), is predicted to illuminate the skies. This event, occurring within the constellation of Corona Borealis, is anticipated to be visible to the naked eye from Earth, offering a unique opportunity for observers around the globe.
The “Blaze Star,” approximately 3,000 light-years away, is a binary system comprising a white dwarf and an ancient red giant. The white dwarf, an Earth-sized remnant of a star, exerts a gravitational pull strong enough to strip hydrogen from its larger companion. This stolen hydrogen accumulates on the surface of the white dwarf, leading to a buildup of pressure and heat until a thermonuclear explosion occurs, known as a nova.
Such nova explosions are not to be confused with supernovae, which are more violent and signal the death of a star. In contrast, a nova does not result in the destruction of the white dwarf; instead, it ejects the accumulated material into space in a brilliant outburst, leaving the star intact to repeat the cycle.

The upcoming event is particularly special due to its rarity. The last time T CrB was observed in a nova state from Earth was in 1946. Historical records suggest that the first sighting of this explosion dates back to Germany in 1217. The recurrence of T CrB’s nova explosions is shorter than average, with outbursts happening approximately every 80 years.
Dr. Rebekah Hounsell, an assistant research scientist at NASA’s Goddard Space Flight Center, has expressed excitement over the impending event. She believes it will not only captivate current astronomy enthusiasts but also inspire a new generation of scientists. The nova is expected to be a catalyst for curiosity, prompting young minds to observe, question, and collect data about the cosmos.
The anticipation for the nova’s appearance has been building, as researchers have noted the star’s behavior over the past decade mirrors the lead-up to the 1946 explosion. If the pattern holds, the nova could grace our skies by September 2024. When it does occur, it is predicted to be visible for approximately one week.
This nova explosion presents a rare opportunity for humanity to witness a “once-in-a-lifetime” event. For those eager to witness this event, the Northern Crown constellation will be the stage for this cosmic performance, with the best views expected during the summer months.
The event’s visibility from Earth without the need for telescopes makes it accessible to a wide audience, allowing people from all walks of life to share in the wonder of the night sky. As the countdown to the nova begins, the global community waits with bated breath for the skies to light up with the fiery glow of T Coronae Borealis.