The universe is mostly silent to our ears because sound needs a medium (like air or water) to travel, and space is mostly a vacuum, but it's filled with electromagnetic vibrations and pressure waves in gas clouds that scientists convert into eerie, low-pitched sounds, like a deep drone or warbling from black holes and plasma waves from the Sun, creating a "soundscape" of cosmic phenomena rather than loud, audible noises like on Earth. While the Big Bang itself was a silent, hot, dense event, it created pressure waves in the early universe that left imprints, and events like black hole mergers produce immense energy translated into sound.
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.
On May 20, 1883, Krakatoa, a volcano on Rakata Island in Indonesia, erupted with a force never seen—or heard—on Earth. The sounds of the eruption of the Krakatoa volcano were estimated to be 310 dB SPL, and there are reports that it was heard some 1 , 300 miles away in the Bay of Bengal.
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.
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).
If we're talking about sounds within the human hearing frequency range (between 20 and 20,000 Hz), high-intensity sounds above 150 decibels can burst your eardrums, while sounds above 185 dB can impact your inner organs and cause death.
Bombs: When a 1-ton TNT bomb explodes, it can emit a sound of 210 dB. The pressure of the explosion causes physical devastation, and the ripple of air pressure can cause hearing damage even for those who are at a distance from the blast.
A sound of 1,100 decibels would literally destroy our universe. For context, the loudest sound ever recorded was the eruption of the Krakatoa volcano in 1883, estimated to have reached 310 dB At 1,100 decibels, a sound would create a black hole larger than the observable universe.
You're at risk of hearing damage after just 15 minutes when you're in a nightclub which plays music at the average volume of 100dB, if you don't use earplugs to protect your ears.
In 1 sextillion years (10²¹ years), the universe will be a vastly different, dark place: the era of star formation will have ended, all stars will have burned out into white dwarfs, neutron stars, or black holes, planets will be cold and lifeless, and even protons might begin to decay, leading towards the "Big Freeze" or heat death, with only black holes slowly evaporating via Hawking radiation over unimaginable timescales. All familiar structures, including galaxies, will have long dissolved as the universe expands, leaving behind a cold, dark, and nearly empty expanse.
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.
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.
1 hour on Earth can equal 7 years in space (or vice versa) due to time dilation, a concept from Einstein's relativity where strong gravity or extreme speeds slow down time relative to an outside observer, famously depicted in the movie Interstellar on a planet near a black hole where an hour for the crew meant years passing on Earth. It's not about speed alone in orbit (ISS astronauts age slightly slower), but about proximity to immense mass, like a black hole, bending spacetime so drastically that time crawls for those nearby compared to time far away.
Either way, spaghettification leads to a painful conclusion. When the tidal forces exceed the elastic limits of your body, you'll snap apart at the weakest point, probably just above the hips. You'll see your lower half floating next to you, and you'll see it begin to stretch anew as tidal forces latch onto it.
When considering the notions of "embodied omnipresence" and the "incorporeal nature of God", we would be safe to say that, if God were present in a black hole in embodied form, the laws of physics would most certainly act on the being of God; God, with all other matter, time and space, would collapse into Godself.
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.
The loudest sound in recorded history came from the volcanic eruption on the Indonesian island Krakatoa at 10.02 a.m. on August 27, 1883.
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.
No sound can travel in space, but sonifications provide a new way of experiencing and conceptualizing data. Sonifications allow the audience, including blind and visually impaired communities, to “listen” to astronomical images and explore their data.
On Earth, in our atmosphere at normal pressures, etc., 1000 dB is impossible. The most the pressure variation can possibly be is the standard air pressure at sea level, about 101.3 kPa, which equates to about 194 dB. You would nor perceive the loudness of such a sound as this intensity is enough to kill you instantly.
3 dB rule: A 3 dB gain means twice (x2) the power. A 3 dB loss means half the power. For example, a system with 40 watts of input power and a 6 dB insertion loss will only have 10 watts of output power.