# What causes black hole evaporation?

## What causes black hole evaporation?

The lower the mass of a black hole, the higher the energy of the emitted Hawking radiation. As a black hole radiates, its mass decreases, and it starts emitting more and more radiation, causing it to evaporate more and more rapidly.

### How long does it take for a black hole to evaporate?

It takes a shockingly long time for a black hole to shed all of its mass as energy via Hawking radiation. It would take 10100 years, or a googol, for a supermassive black hole to fully disappear.

#### Do black holes eventually evaporate?

A supermassive black hole with a mass of 1011 (100 billion) M ☉ will evaporate in around 2×10100 years. Some monster black holes in the universe are predicted to continue to grow up to perhaps 1014 M ☉ during the collapse of superclusters of galaxies. Even these would evaporate over a timescale of up to 10106 years.

How do black holes shrink?

Proposed in 1974, Hawking radiation might cause a black hole to shrink. This influx of negative energy could eventually reduce the black hole’s mass until it disappears. This means a black hole’s size is inversely proportional to its temperature—the smaller the black hole, the warmer it is.

Was Stephen Hawking right about black holes?

New Study Confirms Black Holes Do Not Shrink Over Time. The researchers added that their findings confirm Hawking’s area theorem with more than a 95 per cent level of confidence.

## What is the lifetime of a black hole?

After 10 40 years, black holes will dominate the universe. They will slowly evaporate via Hawking radiation. A black hole with a mass of around 1 M ☉ will vanish in around 2×10 66 years. As the lifetime of a black hole is proportional to the cube of its mass, more massive black holes take longer to decay.

### Does a black hole have a lifespan?

Yes, black holes have a lifespan, as they evaporate over time through Hawking radiation. However, this evaporation process doesn’t start until the background temperature is colder than the black hole itself. So until space cools down sufficiently, black holes won’t start evaporating through Hawking radiation.

#### What is the largest black hole in the universe?

TON 618 is the largest black hole in the known universe. In fact, it’s so large that it has pioneered the classification of “Ultramassive black hole,” and puts forth a lumosity equal to 140 trillion of our suns!

Why do black holes emit radiation?

The reason black holes emit radiation is because virtual particles are popping into existence and popping out of existence throughout space including at the event horizon of a black hole. When they pop into existence they pop into existence in pairs that then annihilate within a fraction of a fraction of a second.