How do you explain the universe?

How do you explain the universe?

The Universe is everything we can touch, feel, sense, measure or detect. It includes living things, planets, stars, galaxies, dust clouds, light, and even time. Before the birth of the Universe, time, space and matter did not exist.

What is the purpose of universe?

The universe is simply the collection of galaxies, stars, planets, comets, meteorites, and other solar system detritus, plus whatever dark matter and dark energy turn out to be. The universe is governed by laws of nature that themselves have no purpose other than dictating what matter and energy do.

What are the theories of the universe?

By far the most popular theory in science today is the big bang theory, the idea that the universe came into existence at a certain point in time roughly 15 to 20 billion years ago. In the last 25 years this theory has moved to the forefront of cosmology.

What is the best definition of space?

1 : a period of time also : its duration. 2a : a limited extent in one, two, or three dimensions : distance, area, volume. b : an extent set apart or available parking space floor space.

Is space a physical thing?

Space in our Universe is three dimensional, and when you combine it with time, you get a four dimensional quantity. When it comes to the notion of spacetime curvature, this is what General Relativity refers to. But under no circumstances should you conceive of space as though it’s a material, physical thing; it isn’t.

Why Is Time an Illusion?

According to theoretical physicist Carlo Rovelli, time is an illusion: our naive perception of its flow doesn’t correspond to physical reality. He posits that reality is just a complex network of events onto which we project sequences of past, present and future.

Is time a location?

As geographers, we seek to understand the impact of location, and time is intricately entwined in location in ways that can be easy to overlook. The most basic is that longitude, the east-west axis of our geographic location reference system, is a time function.

Is nothingness possible?

There is no such thing as nothingness, and zero does not exist.

Who created the universe?

In his 1988 book, A Brief History of Time, Hawking had seemed to accept the role of God in the creation of the universe. But in the new text, co-written with American physicist Leonard Mlodinow, he said new theories showed a creator is “not necessary”.

What exactly is nothing?

“Nothing”, used as a pronoun subject, is the absence of a something or particular thing that one might expect or desire to be present (“We found nothing”, “Nothing was there”) or the inactivity of a thing or things that are usually or could be active (“Nothing moved”, “Nothing happened”).

What is nothing in the universe?

You’d be left with a true vacuum. Even at its lowest energy level, there are fluctuations in the quantum vacuum of the Universe. There are quantum particles popping into and out of existence throughout the Universe. There’s nothing, then pop, something, and then the particles collide and you’re left with nothing again.

Is Empty Space nothing?

Quantum mechanics tells us that there is no such thing as empty space. Even the most perfect vacuum is actually filled by a roiling cloud of particles and antiparticles, which flare into existence and almost instantaneously fade back into nothingness.

Is there really nothing in a vacuum?

(Inside Science) — A vacuum is a space absolutely devoid of matter, at least according to the Merriam-Webster dictionary. According to quantum physics, even vacuums are not completely empty. Constant fluctuations in energy can spontaneously create mass not just out of thin air, but out of absolutely nothing at all.

Is there energy in a vacuum?

Vacuum energy is an underlying background energy that exists in space throughout the entire Universe. Still, the exact effect of such fleeting bits of energy is difficult to quantify. The vacuum energy is a special case of zero-point energy that relates to the quantum vacuum.

Is there matter in a vacuum?

Vacuum, space in which there is no matter or in which the pressure is so low that any particles in the space do not affect any processes being carried on there. It is a condition well below normal atmospheric pressure and is measured in units of pressure (the pascal).