What is the biggest known void in the universe?

The biggest known void in the universe is often cited as the Boötes Void, also called the "Great Nothing," a colossal, roughly spherical area about 330 million light-years across, containing far fewer galaxies than expected, with only about 60 where thousands should be. While the Boötes Void was once considered the largest, astronomers continue to map the universe, and while it remains famous for its extreme emptiness, newer discoveries and classifications of supervoids, like the massive KBC Void, challenge what's considered the "biggest" as structures are better understood.

What is the biggest void in our universe?

The Boötes void spans an area 330 million lightyears across but contains very few galaxies, making it the largest void in the known Universe. Save 30% on the shop price when you subscribe to BBC Sky at Night Magazine today!

Is ton 618 still the biggest black hole?

No, TON 618 isn't definitively the biggest anymore; Phoenix A (in the Phoenix Cluster) is now considered the largest discovered, with a mass potentially exceeding 100 billion Suns compared to TON 618's 66 billion, though Phoenix A's exact mass needs full confirmation, while TON 618 remains the most massive with confirmed measurements, often leading to it still being cited as the largest.
 

Does the KBC Void exist?

The KBC Void, with a radius of around 1 billion light-years, is notable for containing our home galaxy, the Milky Way. Like the Boötes, the KBC Void (or Local Hole) is not a true void, but an area of underdensity, with measurements varying from around 15-50 percent less dense than the surrounding regions.

Is space 100% empty?

No, space is not 100% empty; it's a near-perfect vacuum but contains low densities of particles, cosmic rays, radiation, magnetic fields, dust, neutrinos, and quantum fluctuations like virtual particles that constantly pop in and out of existence, making it full of "stuff" at a fundamental level, even in the vast voids between galaxies.
 

The Biggest Void In The Known Universe

What is a giant void?

The Giant Void (also known as the Giant Void in NGH, Canes Venatici Supervoid, and AR-Lp 36) is an extremely large region of space with an underdensity of galaxies and located in the constellation Canes Venatici.

How much is 1 minute in a black hole?

One minute near a black hole can equal years, decades, or even eternity on Earth due to extreme gravitational time dilation, depending on how close you are; your minute feels normal to you, but time slows drastically the closer you get to the event horizon, making an hour near Sagittarius A* (our galaxy's black hole) feel like 700 Earth years, while an hour near the supermassive Gargantua from Interstellar felt like 7 years. 

Why is 95% of the universe invisible?

About 95% of the universe is invisible because it's made of dark matter (around 27%) and dark energy (around 68%), which don't emit, absorb, or reflect light, unlike the normal "baryonic" matter that makes up stars, planets, and us (only 5%). We know they exist through their gravitational effects (dark matter) and the accelerating expansion of the universe (dark energy), but their fundamental nature remains one of the biggest mysteries in science. 

How long until TON 618 dies?

TON 618, being a supermassive black hole, will take an incomprehensibly long time to "die" through Hawking radiation, estimated around 10¹⁰⁰ years (a googol years) or even longer, far exceeding the current age of the universe (about 13.8 billion years) and the lifespan of stars, making its evaporation a phenomenon of the very distant, cold future, effectively outlasting everything else. 

Can the ton 618 destroy a galaxy?

TON 618, being a supermassive black hole far larger than our Sun, could definitely disrupt and effectively "destroy" the Milky Way if it were to collide with us, causing gravitational chaos, tearing apart structures, sterilizing planets with radiation, and eventually consuming stars and the galaxy's core, though it wouldn't literally "eat" the entire galaxy but rather dismantle it. It's currently billions of light-years away, so our galaxy is safe for now, but its immense mass (66 billion solar masses) makes it a galactic-scale disruptor.
 

Is the Milky Way in a void?

Earth and the rest of the Milky Way could be floating in a billion-light-year-wide cosmic void, according to new research. By looking at the echoes left by the 'soundwaves' of the Big Bang, a team of astronomers discovered that our corner of the Universe could be far emptier than we first thought.

What is the most disturbing thing in space?

A black hole is a region of space so dense, nothing can escape its its gravitational pull: not even light or any other form of electromagnetic radiation. Cross its 'event horizon' and you'll disappear forever. And astronomers now think there's a supermassive black hole at the centre of most galaxies.

Is Earth inside a giant void?

Earth and our entire Milky Way galaxy may sit inside a mysterious giant hole which makes the cosmos expand faster here than in neighbouring regions of the universe, astronomers say.

What is the zombie galaxy?

A "zombie galaxy" is a colloquial term for galaxies that have largely stopped forming new stars (are "dead") but mysteriously reignite with bursts of star formation, often due to mergers or gas falling back in, defying expectations for "quenched" galaxies and sometimes producing dust for new planets, with our own Milky Way considered a potential zombie galaxy in the "green valley" of declining star formation.
 

Can a void be infinite?

From this it is obvious that void space should be infinite in its extent. There is no reason to believe that the part of the infinite universe we can see is any different beyond the scope of what we can see, defined as our cosmic event horizon.

Are we 100% sure that black holes exist?

We are extremely confident black holes exist, with overwhelming observational evidence like gravitational waves and star orbits around invisible massive objects, but in science, "100% proof" doesn't exist; rather, we have models (General Relativity) that perfectly predict phenomena that we observe, and there's no plausible alternative explanation, though theories about the singularity's interior remain speculative.
 

What state is 99.9% of the universe in?

About 99.9% of the visible or ordinary matter in the universe is in the state of plasma, the fourth state of matter, existing in stars, nebulae, and the vast intergalactic medium, making it the most abundant form of matter, though much of the universe's total mass/energy (dark matter/energy) is still a mystery. Plasma is like a superheated gas with ionized atoms, forming electrically charged particles that emit light, seen in phenomena like lightning, the Sun, and auroras. 

Could there be 800 billion planets in our galaxy?

Going on the available evidence from our own solar system - and there's no obvious reason to assume it is unusual - you might plump for a ratio of 1:8. That would give you a ballpark figure of some 800 billion planets in the Milky Way, and something like 100 billion times that for the entire Universe.

Is 1 hour 7 years in space?

In Interstellar, Miller's planet orbits close to the black hole Gargantua, where gravity is so strong that time runs much slower. This is gravitational time dilation, a prediction of Einstein's relativity. On the planet, one hour equals about seven years outside.

Could humans survive in 2x gravity?

Humans can survive short periods in 2x gravity but would face immense challenges long-term, requiring significant physical adaptation or technological aid (like exosuits) to manage the constant strain on muscles, bones, and the cardiovascular system, which struggles to pump blood to the brain. While elite athletes might manage temporarily, most people would experience fatigue, dizziness, and potential organ strain, making daily life exhausting and long-term health precarious without support, as every action feels like lifting your body weight. 

Why is the TON 618 so scary?

TON 618 is scary due to its incomprehensible size as an ultramassive black hole, estimated at 66 billion times the Sun's mass, making its event horizon so vast it could swallow our entire solar system multiple times over, combined with its extreme luminosity as a quasar, shining brighter than trillions of Suns and existing since the universe's early days, challenging our understanding of cosmic growth.
 

Is space an endless void?

Yes, the universe is mostly void, but we have found many wonders in those great expanses.

What is the darkest place in the universe?

The Boötes Void (/boʊˈoʊtiːz/ boh-OH-teez) (colloquially referred to as the Great Nothing) is a roughly spherical region of space in the vicinity of the constellation Boötes.