According to MSN, bubble-like “stars within stars” could help explain black holes. This hypothetical construct is called a gravastar, which is a film of matter that is compressed to a very thin layer and inflated by dark energy. 

However, scientists don’t know how to create a gravastar. However, exploring the mathematical properties of these solutions can help us understand black holes. 

In 2022, scientists detected a gas blob orbiting the Sagittarius A* black hole. The bubble only orbited twice before it faded away. Researchers believe the bubble was not tiny because a tiny bubble would not disappear so quickly. They believe the bubble was either destroyed by the black hole or it stopped emitting light and wavelengths.

Once hypothetical monsters born in a tangled nest of Einstein’s general theory of relativity, black holes are now recognized as bona fide celestial objects as real as stars, moons, and galaxies

Black holes are regions in space where gravity is so strong that nothing, not even light, can escape. In the early 20th century, German theoretical physicist Karl Schwarzschild used Einstein’s field equations to conclude that space and time could fold in on themselves into pits of no return. These hypothetical monsters, born in a tangled nest of Einstein’s general theory of relativity, are now recognized as bona fide celestial objects as real as stars, moons, and galaxies. 

Astronomers believe that supermassive black holes lie at the center of virtually all large galaxies, even our own Milky Way. They can detect them by watching for their effects on nearby stars and gas. 

Black holes are still as mysterious as they were when Schwarzschild first played with Einstein’s field equations. But a new theory suggests that bubble-like “stars within stars” could help explain black hole weirdness. 

The theory, published in the journal Nature, suggests that black holes are not simply empty voids, but rather contain a dense core of matter surrounded by a bubble of space. The bubble is thought to be created by the intense gravity of the black hole, which pulls in space-time like a rubber sheet. 

The theory could help explain some of the strange behavior of black holes, such as their ability to emit radiation. It could also help to explain why black holes are so difficult to detect. 

The theory is still in its early stages, but it has the potential to revolutionize our understanding of black holes.

Einstein’s theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The theory predicts that when a massive star dies, it leaves behind a small, dense remnant core. 

Black holes are created when giant stars collapse, and perhaps by other methods that are still unknown. The gravity is so strong because matter has been squeezed into a tiny space. 

Black holes have different parts to it:

• The singularity The collapsed core of the black hole, where all the energy and matter end up that are pulled in. 
• The event horizon The opening of the black hole. The event horizon isn’t a surface like Earth’s or even the Sun’s. It’s a boundary that contains all the matter that makes up the black hole. In 1971, physicist Stephen Hawking derived a central law for black holes. The law predicts that the total area of their event horizons should never shrink. This law is Hawking’s area theorem. In 1974, Stephen Hawking famously predicted that black holes died by evaporation. Hawking radiation reduces the mass and rotational energy of black holes and is therefore also theorized to cause black hole evaporation

Black holes are regions in space where an enormous amount of mass is packed into a tiny volume. This creates a gravitational pull so strong that not even light can escape. They are created when giant stars collapse, and perhaps by other methods that are still unknown.

Black holes hide a dirty secret of physics. Shove enough stuff into a space described by what’s known as a Schwarzschild radius, gravity will overcome all other forces and pull that mass into a much, much smaller space. So sayeth the field equations of general relativity.

Yet the equations can’t really say what happens at the other end of that big squeeze. As we zoom in on ever smaller distances, quantum physics becomes increasingly important. And with no easy way to bridge the two overarching theoriesof (nearly) everything, we’re left with a big question mark over what happens to matter when gravity squishes it beyond a certain point

The four types of black holes are:

• Stellar: 5–10 solar masses 
• Intermediate: 100–10,000 solar masses 
• Supermassive: More than 10,000 solar masses 
• Miniature: Less than one solar mass The most well-known way for a black hole to form is through stellar death. Supermassive black holes are a million to a billion times more massive than our sun and are found in the centers of galaxies. Most galaxies, and maybe all of them, have such a black hole

Black holes are some of the most fascinating objects in space. They are mysterious and can help us understand the universe. For example, black holes have helped scientists test Einstein’s theory of general relativity, which describes how mass, space, and time relate to each other

Black holes are also a laboratory for “quantum gravity”. Black holes are described by Albert Einstein’s general relativity, but other forces of nature are described by quantum physics. 

Black holes are also messy eaters, which can sometimes give away their location. As they consume surrounding stars, their gravitational and magnetic forces superheat the gas and dust, causing it to emit radiation. Some of this glowing matter surrounds the black hole in a whirling region called an accretion disk. 

The black hole at the center of our galaxy, called Sagittarius A*, has the weight of 4.3 million Suns. Its shadow diameter spans about half that of Mercury’s orbit in our solar system

That means supermassive black holes play an important role in the life of galaxies, even far beyond the black hole’s gravitational pull. And yes, mysterious. Along with astronomers, physicists are interested in black holes because they’re a laboratory for “quantum gravity”.

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