Does space have a bottom?

Astronomers love to remind us that there's no up or down in space. Look out into the depths of the universe and you'll see galaxies floating edge-on, face-on and at every angle in between. Look at planets circling stars within the Milky Way, and their orbits might be oriented in any direction at all.

Is there a bottom of the space?

Our 4D universe does indeed have a top and bottom. The bottom (T=0) was the Big Bang. Space and time curved in, not to a point but to a parabola. There is nothing before T=0 because when you reach 0, whichever way you go, time will increase.

Does space have a floor?

Space has no floor. However, it's not really an endless pit, either, because gravity doesn't pull in one direction. It pulls toward objects that have mass.

Can you fall to the bottom of space?

Gravity is a centrally attractive force, so "going down" means falling or being pulled towards the center of the nearest massive object. If you are in space and the earth is the nearest astronomical object, you fall towards earth.

What is there under the space?

Outer space is not completely empty—it is a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays.

What's At The End Of The Universe?

How cold is it in space?

Hot things move quickly, cold things very slowly. If atoms come to a complete stop, they are at absolute zero. Space is just above that, at an average temperature of 2.7 Kelvin (about minus 455 degrees Fahrenheit).

Is space completely silent?

In space, no one can hear you scream. This is because there is no air in space – it is a vacuum. Sound waves cannot travel through a vacuum. 'Outer space' begins about 100 km above the Earth, where the shell of air around our planet disappears.

Is there color in space?

Because space is a near-perfect vacuum — meaning it has exceedingly few particles — there's virtually nothing in the space between stars and planets to scatter light to our eyes. And with no light reaching the eyes, they see black.

Can you jump off the moon?

Although you can jump very high on the moon, you'll be happy to know that there's no need to worry about jumping all the way off into space. In fact, you'd need to be going very fast – more than 2 kilometres per second – to escape from the moon's surface.

Does space have a smell?

We can't smell space directly, because our noses don't work in a vacuum. But astronauts aboard the ISS have reported that they notice a metallic aroma – like the smell of welding fumes – on the surface of their spacesuits once the airlock has re-pressurised.

Whats at the end of space?

Scientists now consider it unlikely the universe has an end – a region where the galaxies stop or where there would be a barrier of some kind marking the end of space. But nobody knows for sure.

Can you stand still in space?

In the way you defined it, no motion relative to the sun, it is not possible to stand still, because the sun itself is not a solid object. Instead different latitudes rotate with different velocities.

Is there a ceiling in space?

It's all relative. Inside the International Space Station, the ceiling might as well be the floor. The walls might as well be the ceilings. It's enough to make your head spin.

Do you feel upside down in space?

The signals from an astronaut's body in space go haywire in weightlessness. The inner ear reports that it is falling, but the eyes show that nothing is moving. As fluid shifts to the head, the brain usually interprets this extra pressure as a sign it is upside down – but in space there is no up or down.

Is the Earth upside down in space?

“As far as we astronomers can tell, there really is no 'up' or 'down' in space,” he says. So the answer to the question of which way up is the Earth is simple: it is not any particular way up and there is no good reason other than a historical superiority complex to think of north as being the top of the world.

Is everything in space falling?

Everything in space, including the International Space Station, is essentially in free fall, falling rapidly under the force of (almost) nothing but gravity. But most objects aren't quite in literal free fall. Lots of things can give satellites and other space objects tiny pushes in one direction or another.

How cold is the Moon?

The average temperature on the Moon (at the equator and mid latitudes) varies from -298 degrees Fahrenheit (-183 degrees Celsius), at night, to 224 degrees Fahrenheit (106 degrees Celsius) during the day.

What happens if an astronaut floats off in space?

You'd possibly be spinning. In space, no kicking and flailing can change your fate. And your fate could be horrible. At the right angle and velocity, you might even fall back into Earth's atmosphere and burn up.

What is the temperature on the Moon?

Taking the Moon's Temperature

Daytime temperatures near the lunar equator reach a boiling 250 degrees Fahrenheit (120° C, 400 K), while nighttime temperatures get to a chilly -208 degrees Fahrenheit (-130° C, 140 K). The Moon's poles are even colder.

Why are there no stars in space?

Even in space, stars are relatively dim, and simply don't produce enough light to show up in photos set for bright sunlight.

How dark is space?

How dark does space get? If you get away from city lights and look up, the sky between the stars appears very dark indeed. Above the Earth's atmosphere, outer space dims even further, fading to an inky pitch-black. And yet even there, space isn't absolutely black.

Why is space cold?

Far outside our solar system and out past the distant reachers of our galaxy—in the vast nothingness of space—the distance between gas and dust particles grows, limiting their ability to transfer heat. Temperatures in these vacuous regions can plummet to about -455 degrees Fahrenheit (2.7 kelvin).

Do we age faster in space?

Scientists have recently observed for the first time that, on an epigenetic level, astronauts age more slowly during long-term simulated space travel than they would have if their feet had been planted on Planet Earth.

Is fire possible in space?

Fires can't start in space itself because there is no oxygen – or indeed anything else – in a vacuum. Yet inside the confines of spacecraft, and freed from gravity, flames behave in strange and beautiful ways. They burn at cooler temperatures, in unfamiliar shapes and are powered by unusual chemistry.

Are there human bodies in space?

Human remains are generally not scattered in space so as not to contribute to space debris. Remains are sealed until the spacecraft burns up upon re-entry into the Earth's atmosphere or they reach their extraterrestrial destinations.