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Astronomers Worldwide Eagerly Awaiting Rare Celestial Event That Occurs Every 80 Years

Astronomers Worldwide Eagerly Awaiting Rare Celestial Event That Occurs Every 80 Years
Astronomers watching through telescopes. Image created via Canva Pro

The universe is full of wonders, but nothing quite captures our imagination like a star that explodes, dims, and then explodes again. Meet T Coronae Borealis (T CrB), affectionately known as the “Blaze Star.” This remarkable celestial object has a fiery reputation for dramatic outbursts or Novas which occurs only every 80 years and the next one could be just around the corner. For astronomers, it’s a celestial event like no other, and surprisingly, the frequency of its incidence was discovered by none other than an English Schoolboy who hit the space jackpot. Astronomers worldwide are eagerly awaiting the event which is running late according to calculations.

What is the T Coronae Borealis?

A Burst of light from a star nova in space
A Burst of light from a star nova in space. Image via Depositphotos

T Coronae Borealis or T Cor Bor is a recurrent nova located in the constellation Corona Borealis, about 3,000 light-years from Earth. This system isn’t just a single star—it’s a binary system consisting of a white dwarf and a red giant. Together, they form an explosive partnership.

The white dwarf acts as a cosmic thief, pulling material from its red giant companion. Over decades, this material builds up on the white dwarf’s surface until it ignites in a thermonuclear explosion. The result? A sudden, dazzling burst of light that can make the star visible to the naked eye.

A Fiery History: When Did It Explode?

A dying star
James Webb Space Telescope captures images of a dying star. Image source NASA https://creativecommons.org/licenses/by/4.0/

T CrB has erupted twice in recorded history, once in 1866 and again in 1946, both times stunning observers with its brightness. During these outbursts, the star became one of the brightest objects in the night sky, reaching a magnitude of about 2.0.

The 1866 explosion is especially noteworthy for involving a schoolboy named Michael Woodman. Living in Hertfordshire, England, young Michael was fascinated by astronomy and carefully observed the star’s behavior during its outburst. His detailed notes about its brightness and visibility were so meticulous that he decided to write to the Royal Astronomical Society with his findings. The society acknowledged his contribution, making him one of the youngest amateur astronomers to document a significant celestial event. Michael became the first person in the country to observe such an event. In fact, it was his findings that led to the theory of how T CrB explodes every eighty years.

Where Is T Coronae Borealis in the Sky?

A conceptual image of how to find Hercules and the “Northern Crown” in the night sky
Concept image of how to find Hercules and the “Northern Crown” in the night sky. Source: NASA

T CrB resides in the constellation Corona Borealis, also known as the Northern Crown. This small yet distinctive constellation is nestled between Hercules and Boötes in the northern hemisphere. Corona Borealis is easy to spot thanks to its semicircular arrangement of stars, resembling a crown.

To locate T CrB, find the brightest star in the constellation, Alphecca, and focus your telescope or binoculars on the region just north of it. While the Blaze Star is faint during its “quiet” phase, an eruption will make it easily visible to the naked eye.

How to See the Blaze Star

Stargazing
Couple stargazing together. Image by milangucci via Depositphotos

If you want to catch a glimpse of T Coronae Borealis, the key is patience. Under normal conditions, the star has a magnitude of about 10, making it too faint to see without a telescope. But during an eruption, it brightens significantly, rivaling some of the brightest stars in the sky.

To increase your chances of seeing it, track the Corona Borealis constellation on a star map and stay updated with news from astronomers who are monitoring the system. A dark, clear night away from city lights will give you the best view.

When Will It Be Visible Again?

space
A galaxy full of stars. Image by Pixabay via Pexels

This is the million-dollar question: when will T CrB erupt again? Historical records suggest that the Blaze Star erupts approximately every 80 years, with some variability. The last explosion occurred in 1946, so astronomers have been on high alert, expecting the next outburst between 2024 and 2026.

As of now, no eruption has occurred, but the star is under constant observation. When the eruption finally happens, it will likely dominate the night sky for several days to weeks, giving stargazers a rare opportunity to witness a celestial spectacle.

Fun Fact: The Power of Exploding Stars

Fading star explosion by NASA's Chandra X-ray Observatory.
Fading star explosion by NASA’s Chandra X-ray Observatory. Image source: NASA

Here’s a mind-blowing fact: during a nova eruption, a star like T CrB releases as much energy in a single day as our Sun emits in 10,000 years! That’s equivalent to 1 million hydrogen bombs detonating simultaneously. Despite this incredible power, the white dwarf survives the explosion, ready to build up material for its next outburst.

Why T Coronae Borealis Matters

Astronomers stargazing
Astronomers stargazing. Image by milangucci via Depositphotos

T CrB isn’t just a visual treat—it’s a cosmic laboratory. By studying recurrent novae like the Blaze Star, astronomers gain insights into binary star systems, thermonuclear processes, and the life cycles of stars. These systems may even evolve into Type I supernovae, some of the most powerful explosions in the universe, which help measure cosmic distances.

The Blaze Star also serves as a reminder of how much there is to learn about our universe. From professional astronomers to curious schoolboys like Michael Woodman, T CrB has sparked curiosity and inspired discovery for generations. Astronomers believe though late, T CrB’s is imminent which means now is the perfect time to locate the constellation Corona Borealis and keep watch.