'Once-in-a-lifetime event:' Best places to see rare nova explosion from Florida

You may get to see a new — and temporary — star in the sky this year.

A massive explosion 3,000 lightyears away known as a nova event that happens more or less every 80 years will be bright enough to be visible with the naked eye, NASA said.

“It’s a once-in-a-lifetime event that will create a lot of new astronomers out there, giving young people a cosmic event they can observe for themselves, ask their own questions, and collect their own data,” said Dr. Rebekah Hounsell, an assistant research scientist at NASA’s Goddard Space Flight Center in Maryland who specializes in nova events. “It’ll fuel the next generation of scientists.”

Here's what will happen and how to watch.

What is the Nova Event?

A red giant star and white dwarf orbit each other in this animation of a nova. When the red giant moves behind the white dwarf, a nova explosion on the white dwarf ignites, filling the screen with white light.
A red giant star and white dwarf orbit each other in this animation of a nova. When the red giant moves behind the white dwarf, a nova explosion on the white dwarf ignites, filling the screen with white light.

The star system T Coronae Borealis — nicknamed the "Blaze Star" and called T CrB by astronomers — is a binary system, which means it has two stars instead of just one like ours. The red giant star and white dwarf star in T CrB are orbiting each other.

The two stars are close enough that the old red giant star is slowly being stripped of its hydrogen by the gravity of the denser white dwarf, an Earth-sized chunk of dead star, NASA said. When enough material has built up on the white dwarf to raise its temperature and mass to a tipping point, it erupts in what's being called the Nova Event, also called a recurrent or repeating nova.

"The hydrogen from the red giant accretes on the surface of the white dwarf, causing a buildup of pressure and heat," NASA said. "Eventually, it triggers a thermonuclear explosion big enough to blast away that accreted material."

What's the difference between a nova explosion and a supernova?

Supernovas are a one-time deal. Stars go supernova, "a final, titanic explosion" according to NASA, at the end of their life when their mass is about eight times that of our sun and their cores collapse.

Repeating or recurrent novas are caused by other reasons and can erupt more frequently. The one from T CrB is a surface explosion when the built-up matter is flung into space, leaving the star intact. There are 10 known recurrent novas in the Milky Way galaxy, according to physicist Jordi José and astrophysicist Margarita Hernanz.

When is the Nova Event happening?

Good question. Astronomers have no way of knowing precisely and it could be years.

But astronomers say the stars are behaving similarly to the way they did in the time leading up to the last explosion seen in 1946, so it should happen sometime between now and September.

“Recurrent novae are unpredictable and contrarian,” said Dr. Koji Mukai, a fellow astrophysics researcher at NASA Goddard. “When you think there can’t possibly be a reason they follow a certain set pattern, they do – and as soon as you start to rely on them repeating the same pattern, they deviate from it completely. We’ll see how T CrB behaves.”

When it does happen, it will be quick. NASA said that at peak brightness, the nova should be visible to the naked eye for several days and just over a week with binoculars before it dims again.

How can I find the Nova Event at T Coronae Borealis?

A conceptual image of how to find Hercules and his mighty globular clusters in the sky created using a planetarium software.
A conceptual image of how to find Hercules and his mighty globular clusters in the sky created using a planetarium software.

T Coronae Borealis is in the Corona Borealis or “Northern Crown” constellation, a horseshoe-shaped curve of stars west of the Hercules constellation.

To find it after sunset, locate the two brightest stars in the Northern Hemisphere, Arcturus and Vega, and track a straight line between them to find the Northern Crown. When it happens, the nova will be visible in that region.

If you have night sky tracking apps on your phone, search for Corona Borealis.

Where are the best places to watch the Nova Event in Florida?

With a clear sky — we know, we know — you should be able to see the initial explosion from your front yard. But the farther away from light pollution you can get, the better. If you can, go to a rural or empty area with as little light as possible or head to the beach away from hotels and condos and find a spot with a clear, unclouded view of the night sky.

If you really want a good look, consider heading to a state park, local campground or astronomy location for nice, inky-black skies. Here are some popular one for stargazers:

Julia Gomez, USA TODAY and Iris Seaton, Asheville Citizen Times/USA TODAY Network contributed to this story.

This article originally appeared on The Daytona Beach News-Journal: Nova explosion to appear as 'new star.' How to watch in Florida