- Does the past still exist?
- Does space have a smell?
- Why is space black?
- What happens when you reach the end of space?
- How do we know the universe is infinite?
- What is beyond the universe for it to expand into?
- Is there an end to space?
- Is nothingness possible?
- What is beyond the edge of the known universe?
- What is beyond time and space?
- Are galaxies really moving away from us or is space just expanding?
- Why is space so big?
- Is the space infinite?
- Are there any humans lost in space?
- Does the sky ever end?
Does the past still exist?
It does not travel forward through an environment of time, moving from a real point in the past and toward a real point in the future.
Instead, the present simply changes.
The past and future do not exist and are only concepts used to describe the real, isolated, and changing present..
Does space have a smell?
As it turns out, space actually does have a distinct odor. … Astronauts returning from space claim that their suits smell, in a word, burnt. The lingering scent of space is “acrid” and “metallic,” reminding the astronauts of charred meat or welding fumes.
Why is space black?
Around Earth and the inner solar system, for example, space is filled with dust particles that get lit up by the sun, creating a diffuse glow over the entire sky. But that dust isn’t a problem out where New Horizons is. Plus, out there, the sunlight is much weaker.
What happens when you reach the end of space?
However, once the universe reaches heat death, everything everywhere will be the same temperature. That means nothing interesting will ever happen again. Every star will die, nearly all matter will decay, and eventually all that will be left is a sparse soup of particles and radiation.
How do we know the universe is infinite?
If the universe is infinite, it has always been infinite. At the Big Bang, it was infinitely dense. Since then it has just been getting less dense as space has expanded. … In the infinite case, you wouldn’t have enough curvature for spacetime to form the hypersphere.
What is beyond the universe for it to expand into?
The universe is everything, so it isn’t expanding into anything. It’s just expanding. All of the galaxies in the universe are moving away from each other, and every region of space is being stretched, but there’s no center they’re expanding from and no outer edge to expand into anything else.
Is there an end to space?
The end result is unknown; a simple estimation would have all the matter and space-time in the universe collapse into a dimensionless singularity back into how the universe started with the Big Bang, but at these scales unknown quantum effects need to be considered (see Quantum gravity).
Is nothingness possible?
Nothingness is not an object. That means it has no attributes. It has no existence, location, time, color, or any other attribute that an object might have. Nothingness is a word that does not identify or point to anything.
What is beyond the edge of the known universe?
In our own backyard, the Universe is full of stars. But go more than about 100,000 light years away, and you’ve left the Milky Way behind. Beyond that, there’s a sea of galaxies: perhaps two trillion in total contained in our observable Universe.
What is beyond time and space?
Beyond Time and Space is an anthology of science fiction stories edited by American writer August Derleth. …
Are galaxies really moving away from us or is space just expanding?
However, the galaxies are not moving through space, they are moving in space, because space is also moving. … The universe encompasses everything in existence, from the smallest atom to the largest galaxy; since forming some 13.7 billion years ago in the Big Bang, it has been expanding and may be infinite in its scope.
Why is space so big?
Despite what you might assume from this image, most of the Universe is empty, intergalactic space. But the reason the Universe is this large today is because it’s expanded and cooled to reach this point. Even today, the Universe continues to expand at a tremendous rate: approximately 70 km/s/Mpc.
Is the space infinite?
Because we live in three dimensions, 250 times the radius means (250)3 times the volume, or more than 15 million times as much space. But, big as that is, it still isn’t infinite. A lower bound of the Universe being at least 11 trillion light years in all directions is tremendous, but it’s still finite.
Are there any humans lost in space?
The three brave spacefarers who lost their lives in space were cosmonauts Georgy Dobrovolsky, Vladislav Volkov, and Viktor Patsayev. … All three died on the Soyuz 11 mission of Jun 1971.
Does the sky ever end?
It seems strange, but the atmosphere, or sky, doesn’t actually “end”. Instead, the higher up you go, the thinner – and less oxygenated – it gets. … At some height – most people say this is about 100km above sea level – the atmosphere becomes so thin that you could begin to think of yourself as being in space.