A sound of about 1,100 decibels (dB) is theorized to destroy the universe by creating a black hole larger than the observable universe, converting its immense energy into mass according to 𝐸 = 𝑚 𝑐 2 𝐸 = 𝑚 𝑐 2 . This is purely hypothetical, as creating such a sound is impossible, and sound can't travel in space, but the energy required would far exceed the universe's mass-energy, causing it to collapse into a supermassive black hole.
Converting the energy of 1,100 decibels to mass yields 1.113x1080 kg, meaning that the radius of the resulting black hole's event horizon would exceed the diameter of the known universe. Voila! No more universe.
At 300 decibels, the sound would not just be deafening; it would be fatal. Such an extreme noise level would generate shockwaves capable of causing severe damage to structures and the human body, leading to instant hearing loss, internal injuries, and potentially fatal outcomes.
The ultimate fate of an open universe with dark energy is either universal heat death or a "Big Rip" where the acceleration caused by dark energy eventually becomes so strong that it completely overwhelms the effects of the gravitational, electromagnetic and strong binding forces.
With energy as great as 1100 dB, it would create enough gravity to cause a black hole to form, and an incredibly large one at that. Matter and energy are interchangeable (E=mc^2). The black hole doesn't care if it's a great amount of energy or mass, it will still form.
For you to destroy the galaxy, you need to expend enough energy to destroy the galaxy. There are no shortcuts in physics. A 1,100 dB sound would require an astronomical amount of energy, beyond comprehension.
The energy levels of a 1000 decibel sound are in in the neighborhood of Big Bang levels. Decibels describe pressure and it's a logarithmic scale. So, imagine the energy involved in a 100 decibel noise. (like a lawnmower up close or 1000 feet from a jet engine).
About 95% of the universe is "invisible" because it's composed of dark matter (around 27%) and dark energy (around 68%), which don't emit, absorb, or reflect light, unlike the normal matter (stars, planets, us) that makes up the visible 5%. Dark matter's presence is inferred through its gravitational pull on visible galaxies, while dark energy is a mysterious force causing the universe's accelerated expansion.
Space, or outer space, is a vast, near-perfect vacuum largely devoid of matter. This vacuum contains very few particles compared with Earth's atmosphere. However, it's not entirely empty. Space is dotted with scattered matter called the interstellar medium, which includes hydrogen and helium atoms.
In 1 sextillion (10^21) years, the universe will be incredibly cold, dark, and mostly empty; stars will have long died, leaving only black holes, neutron stars, and white dwarfs, with galaxies merging into giant ellipses, and even supermassive black holes will be slowly evaporating via Hawking radiation, heading towards the "heat death" era where the last light sources fade, a timescale dwarfing the current age of the universe.
The Krakatoa volcanic eruption: Not only did it cause serious damage to the island, the eruption of Krakatoa in 1883 created the loudest sound ever reported at 180 dB. It was so loud it was heard 3,000 miles (5,000 km) away. 3. A 1-Ton TNT Bomb: An explosion from this bomb would measure 210 dB.
YOU'RE BEING TOO LOUD: Ear doctors recommend wearing hearing protection for the Taylor Swift concert (and any concert) which can hit more than 100 decibels. At that level, it can cause damage to your ears both in the short term and long term.
For optimal sleep, the level inside your house at night should not exceed 30dB. For the prevention of adverse health effects, you should not be exposed to outside noise pollution of 40 dB. Noise levels should not exceed 45dB for a considerable amount of time.
Interestingly enough, even though space itself is quiet, astronauts have reported experiencing sounds during their missions. These include creaks and groans from spacecraft materials reacting to temperature changes or pressure shifts.
The big crunch, heat death, the big rip, vacuum decay, and the bounce are all different ways the universe could end.
But eventually, the lack of oxygen will take its toll. One by one, your major organs will shut down. After only a handful of minutes you will suffer complete organ failure, otherwise known in the medical community as death.
Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than the other colors because it travels as shorter, smaller waves.
There is consensus that supermassive black holes exist in the centres of most galaxies. The presence of a black hole can be inferred through its interaction with other matter and with electromagnetic radiation such as visible light.
As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Despite its inclusion of the word "year", the term is not a unit of time.
These are the first words in the Bible: “In the beginning God created the heavens and the earth” (Genesis 1:1). Everything that exists has been created by God. This means the full expanse of the universe was created by God.
Looking toward the sun we thus see a brilliant white light while looking away we would see only the darkness of empty space. Since there is virtually nothing in space to scatter or re-radiate the light to our eye, we see no part of the light and the sky appears to be black.
The loudest human-made sounds: Nuclear Bomb (224 dB), Rocket launch (204 dB). And clocking in at 260 underwater decibels is the seismic blast, part of a process for exploring for oil and gas in the ocean.
Chain saws typically are measured at 125 decibels (dBA) and heavy equipment at 95-110 decibels (dBA). Continuous exposure to these levels may exceed the permissible amount allowed in Table G-16 of OSHA's Occupational Noise Exposure Standard [1910.95]. Even short term exposures to these levels can cause hearing loss.