What is at the bottom of space?

There’s nothing in the bottom of the space, or let’s say there isn’t any “bottom” of the space to begin with. When you’re in space, you aren’t supposed to address anything with the words ‘up’ & ‘down’, because it really gives the hard time for other people to refer it.

Is our universe a Hypersphere?

A hypersphere is the four-dimensional analog of a sphere. Although a sphere exists in 3-space, its surface is two-dimensional. Similarly, a hypersphere has a three-dimensional surface which curves into 4-space. Our universe could be the hypersurface of a hypersphere.

Why do we believe the universe is flat?

On a cosmic scale, the curvature created in space by the countless stars, black holes, dust clouds, galaxies, and so on constitutes just a bunch of little bumps on a space that is, overall, boringly flat. is easily explained, too: spacetime is curved, and so is space; but on a large scale, space is overall flat.

How many sides does the universe have?

As far as we can tell, there is no edge to the universe. Space spreads out infinitely in all directions. Furthermore, galaxies fill all of the space through-out the entire infinite universe. This conclusion is reached by logically combining two observations.

Is the universe a sphere or flat?

The observable universe can be thought of as a sphere that extends outwards from any observation point for 46.5 billion light-years, going farther back in time and more redshifted the more distant away one looks.

How do we know that the universe is still expanding?

Answer: Astronomers observe a regular progression of galaxies which are expanding at progressively higher velocities as they measure galaxies at increasing distances. What they measure then is an expansion of the universe at both relatively recent times in addition to the early phases of the universe’s evolution.

What is the end of the universe?

The universe in this case is not infinite, but it has no end (just as the area on the surface of a sphere is not infinite but there is no point on the sphere that could be called the “end”). The expansion will eventually stop and turn into a contraction.

How are the spheres of the earth related to each other?

Birds (biosphere) fly through the air (atmosphere), water (hydrosphere) flows through the soil (lithosphere). The spheres of earth are closely connected to each other. A change in one sphere results in change in two or more spheres.

How can the universe be expanding without an end?

The universe is a three-dimensional version of the balloon’s skin. But how can the universe be expanding if there is no end or edge to it? Using the balloon analogy again, if one were to add more air to the balloon, the ant would observe other things on the balloon’s surface getting farther away.

What is the shape of the observable universe?

Short answer: 1. The “Observable Universe” is a spherical region of space centered around the observer in question, with a radius that is currently about 46 billion light-years. 2. The entire Universe may or may not be infinite, and there are three options for its over-all “shape” (two of which are infinite, one of which is not).