Never Before Seen Helium Nova Is Shooting Cosmic Cannon Balls At Stars

Wonderful person, this is Anton, and in this video, we're going to discuss yet another cosmic mystery. And this time in regards to explosions that should not happen the way they seem to happen. But before we discuss this mystery, I wanted to preface with this. For a few years now, a lot of astronomers were actually

waiting for this. They've been waiting for something in the constellation of Corona Borealis because a star referred to as T Corona Borealis, also known as the Blaze Star, was supposed to erupt.

And that's because it's a classical example of what's known as the recurrent nova. It seems to explode roughly every 80 years, with the last big explosion being in 1946. And in every single case, it usually start with something like this. A kind of an outburst that seems to follow an actual nova a few months

later. And that's exactly what scientists observed in 2023 and 2024, which is why by September of 2024, it was supposed to explode. Yet, it didn't.

And as of today, as of August of 2026, the star is still quiet, and the nova still has not occurred. With this unusual delay now being a kind of a scientific mystery, and basically tells us that something about our models and our understanding of nova is not complete. Or basically that these types

of explosions are way more complex and are definitely non-linear in a sense that they're a lot more difficult to predict. But while this particular star is keeping us waiting, other very similar stars have definitely been busy.

With scientists in the last couple of years discovering a new type of mini novas and even hybrid novas, as well as this new mystery we're going to be discussing today referred to as the helium nova. The one that seems to be even firing these very bizarre cosmic bullets into outer space. And so let's

discuss these new studies and new discoveries in a bit more detail. But to understand why some of this is already strange, and why some of it is mysterious. Well, let's I guess discuss the definition first. What exactly is a nova, and specifically a classical nova?

Because despite the name, these are not supernova. This is a very different phenomenon. And well, first, imagine a binary system, but in this case of two slightly different stars. Here you have a white dwarf, or basically this very dense remnant of a star very similar to our sun, and a normal companion star

next to it. In a sense, this is a result of a typical binary system, in some sense kind of similar to the one we find in the nearby Alpha Centauri. And so, actually quite a lot of star systems will probably end up in a very similar way. But because the white dwarf is so dense, and because its gravity is so

immense, at some point, if it's close enough to the star, it can literally start siphoning hydrogen gas from its neighbor. With all of this stolen gas now basically building up first as the accretion disk around the white dwarf, and then eventually landing on the surface, and forming a kind of a dense

layer. And though at first it starts as a very thin layer, eventually this builds up, and as you can imagine, both the pressure and the heat inside this layer start to go up as well. As a matter of fact, the bottom of this layer becomes so ridiculously hot and pressurized that eventually it triggers