- Can a universe come from nothing?
- Can a vacuum exist?
- What makes the universe exist?
- What does space smell like?
- How much energy is in empty space?
- What is an empty space or free space?
- Does nothingness exist?
- Who has created God?
- Can you hear in space?
- Does time actually exist?
- How many dimensions do we live in?
- Is 2020 a parallel universe?
- Is empty space empty?
- What is beyond the universe?
- What universe do we live in?
- Are there other universes?
- Who created earth?
- Why is space black?
- How did time start?
- What was before the universe?
Can a universe come from nothing?
If you accept a physical definition of “nothing,” then yes, the Universe as we know it very much appears to have arisen from nothing.
But if you leave physical constraints behind, then all certainly about our ultimate cosmic origins disappears..
Can a vacuum exist?
A vacuum taken in a rigorously exact or ideal sense is not present in these lower regions. There is empty space in a mathematical sense beyond the limit of the earth’s virtue. … that a vacuum does not exist in nature even though no one on earth can produce such a space that is completely empty of all matter.
What makes the universe exist?
The Big Bang theory is the prevailing cosmological description of the development of the universe. According to estimation of this theory, space and time emerged together 13.799±0.021 billion years ago, and the universe has been expanding ever since.
What does space smell like?
Fun fact: What does space smell like? In a 2012 article published in the Atlantic, astronauts describe being met with a peculiar smell after removing their helmets following a spacewalk. That smell has been described as “seared steak,” “hot metal” and “welding fumes.”
How much energy is in empty space?
Using the upper limit of the cosmological constant, the vacuum energy of free space has been estimated to be 10−9 joules (10−2 ergs) per cubic meter.
What is an empty space or free space?
Outer space, especially the relatively empty regions of the universe outside the atmospheres of celestial bodies. Vacuum, a volume of space that is essentially empty of matter, such that its gaseous pressure is much less than atmospheric pressure. Free space, a perfect vacuum as expressed in the classical physics model.
Does nothingness exist?
There is no such thing as nothingness, and zero does not exist. Everything is something. Nothing is nothing.
Who has created God?
Defenders of religion have countered that the question is improper: We ask, “If all things have a creator, then who created God?” Actually, only created things have a creator, so it’s improper to lump God with his creation. God has revealed himself to us in the Bible as having always existed.
Can you hear in space?
Space is a vacuum — so it generally doesn’t carry sound waves like air does here on Earth (though some sounds do exist in outer space, we just can’t hear them). … These radio emissions are then converted into sound waves, and the result is the spooky sounds NASA put together into a playlist.
Does time actually exist?
Time is not absolute Einstein’s general theory of relativity established time as a physical thing: it is part of space-time, the gravitational field produced by massive objects. The presence of mass warps space-time, with the result that time passes more slowly close to a massive body such as Earth.
How many dimensions do we live in?
In everyday life, we inhabit a space of three dimensions – a vast ‘cupboard’ with height, width and depth, well known for centuries. Less obviously, we can consider time as an additional, fourth dimension, as Einstein famously revealed.
Is 2020 a parallel universe?
No, NASA has not found a “parallel Universe”. Note: this article has been updated to include details of the research paper that discusses the “CPT symmetric universe” where time would run backwards from the Big Bang. The internet has done it again.
Is empty space empty?
Space is not empty. A point in outer space is filled with gas, dust, a wind of charged particles from the stars, light from stars, cosmic rays, radiation left over from the Big Bang, gravity, electric and magnetic fields, and neutrinos from nuclear reactions.
What is beyond the universe?
But “infinity” means that, beyond the observable universe, you won’t just find more planets and stars and other forms of material…you will eventually find every possible thing.
What universe do we live in?
the observable universeOur home galaxy, the Milky Way, contains at least 100 billion stars, and the observable universe contains at least 100 billion galaxies.
Are there other universes?
Our universe is but one in an unimaginably massive ocean of universes called the multiverse. If that concept isn’t enough to get your head around, physics describes different kinds of multiverse. The easiest one to comprehend is called the cosmological multiverse.
Who created earth?
Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. Volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen.
Why is space black?
In space or on the Moon there is no atmosphere to scatter light. The light from the sun travels a straight line without scattering and all the colors stay together. Looking toward the sun we thus see a brilliant white light while looking away we would see only the darkness of empty space.
How did time start?
According to the general theory of relativity, space, or the universe, emerged in the Big Bang some 13.7 billion years ago. … “In the theory of relativity, the concept of time begins with the Big Bang the same way as parallels of latitude begin at the North Pole.
What was before the universe?
The initial singularity is a singularity predicted by some models of the Big Bang theory to have existed before the Big Bang and thought to have contained all the energy and spacetime of the Universe.