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Exploding star to bring 'once-in-a-lifetime' stargazing opportunity

For the first time since 1946, stargazers will have the chance to see an incredibly rare explosion in the cosmos known as a nova.

By Brian Lada, AccuWeather meteorologist and senior content editor

Published May 15, 2024 11:54 AM EDT | Updated Jun 12, 2024 9:20 AM EDT

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Astronomers believe the normally faint T Coronae Borealis star system may become visible between now and September 2024 due to an expected nova explosion that occurs once roughly every 80 years.

A blazingly bright event known as a nova, a light show that happens approximately once every 80 years, is expected to be visible in the coming months -- an event more rare than a total solar eclipse.

"This could be a once-in-a-lifetime viewing opportunity," NASA said.

An animation showing a nova of a white dwarf that is orbiting a larger red giant star. (NASA’s Goddard Space Flight Center)

T Coronae Borealis is a white dwarf 3,000 light-years from Earth and will be the focal point of the highly anticipated outburst. It last flashed in the sky in 1946 and is predicted to happen again before October.

A nova might not be as breathtaking as a total solar eclipse or as awe-inspiring as the aurora, but it happens far less frequently than either. For comparison, total solar eclipses happen multiple times a decade, while the widespread nature of the northern lights on May 10 was the best light display of its kind in 21 years.

Best pictures of the Aurora Borealis

Northern lights create jaw-dropping show, best in over 20 years

"Once its brightness peaks, it should be visible to the unaided eye for several days and just over a week with binoculars before it dims again, possibly for another 80 years," NASA explained. Normally, you would need a telescope to spot the star in the night sky.

It is located near Corona Borealis, sandwiched between the constellations Hercules and Boötes. For people across North America, it is visible in the eastern sky after nightfall and gradually climbs high in the southern sky as the night transpires.

A sky chart showing the constellation Corona Borealis between Hercules and Boötes. T Coronae Borealis will appear near Corona Borealis. (NASA)

The predicted nova of T Coronae Borealis occurs because it is gravitationally bound to another star, known as a binary system. As matter from one star collects on the surface of T Coronae Borealis, it heats up over time and, roughly once every 80 years, results in the bright outburst that causes it to shine incredibly bright for a short time.

This is just one of five known reoccurring novas in the Milky Way galaxy.

More Space and Astronomy:

Scientists have discovered a theoretically habitable, Earth-size planet
Rare lunar event may reveal Stonehenge’s link with the moon
Scientists say they’ve found where the sun’s magnetic field originates

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