What is space and why does it exist?

From the perspective of an Earthling, outer space is a zone that occurs about 100 kilometers (60 miles) above the planet, where there is no appreciable air to breathe or to scatter light. In that area, blue gives way to black because oxygen molecules are not in enough abundance to make the sky blue.

Where did space come from?

The Big Bang theory says that the universe came into being from a single, unimaginably hot and dense point (aka, a singularity) more than 13 billion years ago. It didn’t occur in an already existing space. Rather, it initiated the expansion—and cooling—of space itself.

Is space actually nothing?

Space is the nothing between things. Space – nothing – is filled with fields, gravitational fields, EM fields, photons, neutrinos, and perhaps more forms of energy yet to be discovered by physics.

What is a space without matter called?

A vacuum is an empty place, which space nearly achieves. But the vacuum of space is the opposite. By definition, a vacuum is devoid of matter. Space is almost an absolute vacuum, not because of suction but because it’s nearly empty.

Why do we have space?

Einstein says that space is because there’s gravity which is because there’s mass which is because there’s energy. (mass is just a concentration of energy) Energy > Mass > Gravity > Space. The Great Dane wouldn’t agree much with your question till you add a disclaimer that you were trying to ‘observe’ it.

Why is there vacuum in space?

Space is a vacuum (for some definition of vacuum), because vacuum is simply the absence of air/gas pressure, and there aren’t enough gas molecules in space to create a noticeable pressure. That said, note that there are particles in space; they are moving, and they do exert pressure on things they hit.

How was the universe created?

How was the Universe made? Most astronomers think that the Universe was formed during an event called the Big Bang – a giant explosion which occurred between 10 and 20 billion years ago. During the Big Bang, all of the space, time, matter, and energy in the Universe was created. This giant explosion hurled matter in all directions and caused space itself to expand.

How big is space?

Distance in outer space are so vast that terrestrial units of measurement lose their meaning, so astrophysicists have devised more useful ones. They use the astronomical unit, which is 149,597,870 kilometers (92,955,807 miles) to measure distances within the solar system.