The ‘Blaze Star’ Could Explode Tonight — Here’s Where To Look

A star visible only once every 80 years could light up the night sky tonight. T Coronae Borealis, nicknamed the Blaze Star, is a recurrent nova system on the verge of its next eruption — and astronomers say the show could begin at any moment.

Skywatchers around the Northern Hemisphere have a rare chance to witness T Coronae Borealis (T CrB) explode into visibility, briefly rivaling the brightest stars in the constellation Corona Borealis. The system, located about 3,000 light-years away, undergoes a thermonuclear eruption roughly every eight decades, with the last outburst recorded in 1946. The current prediction window runs through late 2026, with some models suggesting the explosion could happen within hours or days.

T CrB is a binary system: a white dwarf siphoning material from a red giant companion. When enough hydrogen accumulates on the white dwarf's surface, it ignites in a runaway fusion reaction — a nova that outshines its normal state by thousands of times. Unlike a supernova, the star survives. The cycle's regularity earned it the "Blaze Star" moniker, and each eruption brightens it from magnitude +10 (invisible to the naked eye) to roughly magnitude +2, easily seen from dark skies.

To find T CrB, locate the constellation Corona Borealis (the Northern Crown) — a distinctive semicircle of stars near Hercules and Boötes. The nova will appear as a new "star" inside the crown's curve, near the bright star Alphecca (Gemma). Binoculars help initially, but if it erupts as predicted, it will be visible to the naked eye for several days. The best viewing is after midnight when the constellation is high overhead. Astronomers advise checking the area night after night; the explosion could be missed if it happens during daylight or poor weather.

The timing of this eruption is unusual: it coincides with a period of heightened public interest in transient astronomical events, following last year's total solar eclipse and aurora displays linked to solar maximum. Social media and real-time astronomy apps have made event tracking more accessible than in 1946. Professional observatories and amateur astronomers worldwide are monitoring T CrB daily, ready to alert the community the moment it begins.

If the Blaze Star does not erupt tonight, the window remains open. Some models suggest the nova could delay into early 2027, but the odds favor an event within the coming weeks. Once it starts, observers can expect a rapid brightening over a few hours, a peak lasting one to three days, then a gradual fade over a week. For anyone who misses it, the next chance comes around the year 2106. This is a live-sky event that rewards patience and dark, clear horizons.