- What would happen if you fired a gun in space?
- Does space have a bottom?
- Can you be upside down in space?
- Do satellites fall to earth?
- Has anyone been lost in space?
- Why don’t we fall into the center of the Earth?
- Can you fall off the moon?
- Where does space end?
- Can we create gravity?
- Is everything in the universe falling?
- How many dead bodies are in space?
- Are there any bodies in space?
- Do satellites crash?
- Are planets falling in space?
- How long would it take to die in space?
- Why do we not fall through the floor?
- What keeps the Earth spinning?
- How much do astronauts get paid?
- Why do objects fall from space?
- How cold is space?
- What does space smell like?
What would happen if you fired a gun in space?
Fires can’t burn in the oxygen-free vacuum of space, but guns can shoot.
In space, “it would be an expanding sphere of smoke from the tip of the barrel,” said Peter Schultz an astronomer at Brown University who researches impact craters.
Does space have a bottom?
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.
Can you be upside down in space?
There is no “upside down” in space. We are conditioned to feel the pull of gravity toward the center of the Earth and we know that the direction of that pull is “down”. But in space there’s no pull of gravity (well, none that you can feel anyway) so the entire idea of “down” becomes arbitrary.
Do satellites fall to earth?
The short answer is that most satellites don’t come back to Earth at all. … Satellites are always falling towards the Earth, but never reaching it – that’s how they stay in orbit. They are meant to stay there, and usually there is no plan to bring them back to Earth.
Has anyone been lost in space?
A total of 18 people have lost their lives either while in space or in preparation for a space mission, in four separate incidents. All seven crew members died, including Christa McAuliffe, a teacher from New Hampshire selected on a special NASA programme to bring civilians into space. …
Why don’t we fall into the center of the Earth?
The reason that objects don’t fall to the center of the earth is that the force of gravity is balanced by the “normal force.” Basically, this force arises because the forces between molecules in the ground are strong enough that molecular bonds aren’t broken when we step on them.
Can you fall 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.
Where does space end?
No, they don’t believe there’s an end to space. However, we can only see a certain volume of all that’s out there. Since the universe is 13.8 billion years old, light from a galaxy more than 13.8 billion light-years away hasn’t had time to reach us yet, so we have no way of knowing such a galaxy exists.
Can we create gravity?
Artificial gravity can be created using a centripetal force. A centripetal force directed towards the center of the turn is required for any object to move in a circular path. In the context of a rotating space station it is the normal force provided by the spacecraft’s hull that acts as centripetal force.
Is everything in the universe falling?
All objects in the universe are constantly falling. You fall to the earth every time you jump. You and the earth are constantly falling around the sun. You, the earth, and the sun are constantly falling around the center of the galaxy.
How many dead bodies are in space?
3 peopleOnly 3 people have died in space: Georgi Dobrovolski, Viktor Patsayev, and Vladislav Volkov. 3 cosmonauts on the Soyuz 11 mission who died in 1971 when returning from a Soviet space station.
Are there any bodies in space?
Only three astronauts have died in space: Georgy Dobrovolsky , Vladislav Volkov , and Viktor Patsayev . They were the crew of the Soyuz 11 mission in June of 1971. … The Soyuz 11 astronauts’ bodies did not remain in space. The spacecraft re-entered the atmosphere and landed autonomously; and was recovered.
Do satellites crash?
Collisions in space can be disastrous and can send high-speed debris in all directions. This endangers other satellites, future launches, and especially crewed space missions. As a point of reference, NASA often moves the International Space Station when the risk of collision is just 1 in 100,000.
Are planets falling in space?
Planets don’t fall down, because there is no universal “down” in space. “Down” is a local thing. We only have “down” on or very near a planet, star or moon, and “down” is always the direction toward the center of that thing. This is called gravity.
How long would it take to die in space?
Water and dissolved gas in the blood forms bubbles in the major veins, which travel throughout the circulatory system and block blood flow. After about one minute circulation effectively stops. The lack of oxygen to the brain renders you unconscious in less than 15 seconds, eventually killing you.
Why do we not fall through the floor?
So the reason we don’t fall through the floor is that the negative electric charge in the electrons around the atoms in our feet (or shoes, or fluffy pink socks), are repelled by the negative electric charge in the electrons around the atoms that make up the floor (or ground, or concrete, or embarrassingly patterned …
What keeps the Earth spinning?
The Earth spins because it formed in the accretion disk of a cloud of hydrogen that collapsed down from mutual gravity and needed to conserve its angular momentum. It continues to spin because of inertia.
How much do astronauts get paid?
Astronauts’ annual salaries are determined using a government pay scale, and starting out, typically fall under two grades: GS-12 and GS-13. According the US government’s 2020 pay scales and a NASA job listing, a civilian astronaut in 2020 can earn between $66,167 and $161,141 per year.
Why do objects fall from space?
The answer is gravity: an invisible force that pulls objects toward each other. Earth’s gravity is what keeps you on the ground and what makes things fall. Anything that has mass also has gravity.
How cold is 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).
What does space smell like?
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.