Dear Lykkers, black holes are among the most mysterious objects in the universe, but an even bigger mystery may be how the first ones became so massive.

The universe is about 13.8 billion years old, yet astronomers have detected enormous black holes from surprisingly early periods of cosmic history.

One possible explanation involves an unusual theoretical object known as a quasi-star, in which a growing black hole could have been surrounded by a huge envelope of gas.

Why the First Black Holes Matter

Black holes can form in several ways, but one familiar process begins with the collapse of a massive star. After a star reaches the end of its life, its central region can collapse under gravity and produce a black hole. Over time, that black hole can gain mass by drawing in surrounding material.

The problem is speed. Some black holes observed in the early universe were already extremely massive when the cosmos was only a few hundred million years old. Starting with a relatively small stellar black hole and reaching such a huge size so quickly is difficult under many conventional growth models.

This has encouraged astronomers to investigate other ways that the first black-hole seeds could have formed.

A Black Hole Inside a Giant Envelope

The quasi-star concept provides one possible answer. In the young universe, large quantities of gas could gather under gravity. Under special conditions, an enormous cloud might form a dense central region surrounded by a vast envelope of gas.

If the central region collapsed into a black hole, the new black hole would remain buried inside this massive envelope. Rather than existing alone in space, it would be surrounded by material that could continue moving toward the center.

This would create an unusual system: a black hole hidden inside a huge, hot envelope. The outer structure could produce intense light while the central black hole gradually gained mass.

The concept is sometimes described as a “black hole star,” although it is very different from an ordinary star like the Sun.

Why the Growth Could Be Rapid

A major advantage of this model is the enormous amount of material surrounding the central black hole. As gas moves inward, it can release large amounts of energy. That energy can push against incoming material and limit how quickly a black hole grows.

In a massive envelope, however, energy could be transported outward while gas continues moving inward. Some theoretical models suggest that this arrangement could allow the central black hole to grow much faster than a typical black hole formed from a single star.

Over a relatively short period in cosmic terms, the central black hole could therefore become much more massive. Once the surrounding envelope disappeared, the enlarged black hole could continue growing within its developing galaxy.

What Modern Telescopes Can See

The James Webb Space Telescope has brought new attention to the question of early black-hole growth. Its observations have revealed numerous distant objects from the young universe, including unusual sources often referred to as “little red dots.”

Astronomers are studying their light to understand whether some of these objects contain rapidly growing black holes hidden within dense material. Certain observations have produced evidence consistent with black-hole-star models, making the idea an important subject for further research.

However, these observations do not prove that quasi-stars created the first black holes. Scientists are still comparing different explanations and examining whether these unusual early objects represent one population or several different types of cosmic systems.

Other Possible Beginnings

Quasi-stars are only one proposed pathway for producing massive early black holes. Some black holes may have originated from the deaths of the universe’s first massive stars.

Another possibility is direct collapse. In this scenario, an enormous concentration of gas could collapse directly into a massive black-hole seed without first becoming a normal star.

Scientists have also considered primordial black holes, which could theoretically have formed during the universe’s earliest stages. At present, there is no definitive evidence showing that one single process produced all of the earliest black holes.

Final Thoughts

The origin of the universe’s first black holes remains an open scientific question. The black-hole-star idea offers a fascinating possibility: instead of starting as tiny isolated objects, some early black holes may have been born inside enormous gas envelopes that supplied them with material and allowed unusually rapid growth.

As observatories continue to study the distant universe, astronomers are gaining better opportunities to investigate these ancient objects. Each new observation can help reveal how the first black holes formed, how quickly they grew, and how they eventually became the giant black holes found at the centers of many galaxies today.

Black Holes 101 | National Geographic

Video by National Geographic