The main idea here is that, although no material objects can travel faster than light, there is no known upper speed to the ability of spacetime itself to expand and contract. ... The warp effect uses gravitational effects to compress the spacetime in front of a spacecraft, then expand the spacetime behind it.
How small can the universe be compressed?
The smallest conceivable answer — 17 centimeters — is about the size of a soccer ball! The Universe couldn’t have been much smaller than that, since the constraints we have from the Cosmic Microwave Background (the smallness of the fluctuations) rule that out.
Can space be compressed?
However space can compress matter , at the center of every world that has gravity, there is a black hole, all different sizes depending on many things, and what a black hole is, is the point in which space is collapsing. Space is a different thing than energy and matter.
Is matter compressed space?
However space can compress matter , at the center of every world that has gravity, there is a black hole, all different sizes depending on many things, and what a black hole is, is the point in which space is collapsing. Space is a different thing than energy and matter.
Does gravity stretch or compress space?
A gravitational wave is an invisible (yet incredibly fast) ripple in space . Gravitational waves travel at the speed of light (186,000 miles per second). These waves squeeze and stretch anything in their path as they pass by. A gravitational wave is an invisible (yet incredibly fast) ripple in space.
What percentage of the universe is empty space?
But it might humble you to know that all of those things — your friends, your office, your really big car, you yourself, and everything in this incredible, vast universe — are almost entirely, 99.9999999% , empty space.
How big is the universe without empty space?
So all of the matter in the universe would fit into about 1 billion cubic light years , or a cube that’s approximately 1,000 light years on each side. That means that only about 0.0000000000000000000042 percent of the universe contains any matter. The universe is a pretty empty place!
What is beyond a black hole?
Unlike a black hole, a white hole will allow light and matter to leave, but light and matter will not be able to enter. Scientists have continued to explore the potential connection between black and white holes.
Could the universe be a black hole?
The birth of our universe may have come from a black hole. Most experts agree that the universe started as an infinitely hot and dense point called a singularity. ... It is, in fact, and some physicists say they could be one and the same: The singularity in every black hole might give birth to a baby universe.
Where does everything go in a black hole?
It can never leave that region. For all practical purposes the matter has disappeared from the universe. Once inside the black hole’s event horizon, matter will be torn apart into its smallest subatomic components and eventually be squeezed into the singularity .
Is time the same in space?
We all measure our experience in space-time differently. That’s because space-time isn’t flat — it’s curved, and it can be warped by matter and energy. So depending on our position and speed, time can appear to move faster or slower to us relative to others in a different part of space-time.
Why is black hole black?
Most black holes form from the remnants of a large star that dies in a supernova explosion . (Smaller stars become dense neutron stars, which are not massive enough to trap light.)
Why there is no gravity in space?
Because space is relatively empty, there is little air to feel whooshing past you as you fall and there are no landmarks to indicate you are moving. ... The second reason that gravity is not so obvious in space is because objects tend to orbit planets instead of hitting them .
Why can’t we walk through walls?
You simply can’t walk through walls. Because according to the Pauli Exclusion Principle , no two particles can exist in the same place – it’s just impossible for both the particles — within the limits set by the uncertainty principle — to have the same position and same velocity.
Is there an empty space in the universe?
Somewhere, far away, if you believe what you read, there’s a hole in the Universe. There’s a region of space so large and empty, a billion light-years across, that there’s nothing in it at all . There’s no matter of any type, normal or dark, and no stars, galaxies, plasma, gas, dust, black holes, or anything else.
Is empty space really 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.
