- Do satellites need fuel?
- Do thrusters work in space?
- Is Propulsion possible in space?
- Can you stay still in space?
- How many dead bodies are in space?
- What happens if you throw a ball in space?
- Does a spaceship need fuel in space?
- How much does a space suit cost?
- What fuel do rockets use in space?
- Has anyone been lost in space?
- Why do astronauts go underwater?
- Do objects in space slow down?
- What is the fastest engine for space travel?
- How fast is 1 g in mph?
- What propulsion is used in space?
- Can you accelerate indefinitely in space?
- Can you swim in space?
- Do things accelerate in space?
Do satellites need fuel?
Satellites do carry their own fuel supply, but unlike how a car uses gas, it is not needed to maintain speed for orbit.
It is reserved for changing orbit or avoiding collision with debris..
Do thrusters work in space?
It is the action of the thruster “throwing” mass in one direction, that moves the craft in the other direction. … Rocket engines work BETTER in the vacuum of space, because there is nothing (like air!) to provide resistance to the spacecraft moving away from the direction the reaction mass was “squirted” by the thruster.
Is Propulsion possible in space?
The basic principle behind space propulsion is very simple: for every action, there is an equal and opposite reaction. Use a rocket engine to throw mass one way, get propelled the other way. … But now, a NASA study has concluded that a new type of spacecraft propulsion is able to generate thrust without propellant.
Can you stay still in space?
On the other hand, an object can be standstill in a reference to another object, despite of the fact if both are in motion, orbiting a larger objects or simply flying free. So, the answer is YES always when it is in reference to another space body. Otherwise, there is no such thing as stand still in space.
How many dead bodies are in space?
As of 2020, there have been 15 astronaut and 4 cosmonaut fatalities during spaceflight. Astronauts have also died while training for space missions, such as the Apollo 1 launch pad fire which killed an entire crew of three. There have also been some non-astronaut fatalities during spaceflight-related activities.
What happens if you throw a ball in space?
If you are throwing the ball at ‘space’ space, I.e, outer space, then it will suffer infenitisemally small resistive force. Since no force is experienced, it would continue in the velocity with which it left your hand(Newton’s first law). … Gravitational acceleration stops when the ball hits that surface.
Does a spaceship need fuel in space?
The propellant is primarily needed to get the spacecraft into orbit, not to stay in orbit. … This is done because so much fuel is needed to get a payload from the surface to orbital altitude and accelerated to orbital speed. When about half the propellant is burned, the bottom half of the rocket is jettisoned.
How much does a space suit cost?
The cost of a spacesuit originally was about $22 million. Building one from scratch right now can be as much as 250 million.
What fuel do rockets use in space?
Liquid HydrogenNASA – Liquid Hydrogen–the Fuel of Choice for Space Exploration.
Has anyone been lost in space?
Soyuz 1 dooms cosmonaut: The first fatal accident in a space mission befell Soviet cosmonaut Vladimir Komarov, whose problem-plagued Soyuz 1 capsule crashed onto Russian soil in 1967. … The resulting drop in pressure also exposed the crew to the vacuum of space — the only human beings to ever experience such a fate.
Why do astronauts go underwater?
Since the mid-1960s, NASA has trained its astronauts in Houston to conduct extravehicular activities (EVAs), otherwise known as spacewalks, in underwater conditions. The agency has long considered working below the surface in neutrally buoyant conditions an ideal way to train for the zero-G environment of space.
Do objects in space slow down?
While outer space does contain gas, dust, light, fields, and microscopic particles, they are in too low of a concentration to have much effect on spaceships. As a result, there is essentially zero friction in space to slow down moving objects.
What is the fastest engine for space travel?
The fastest chemical rocket ever, the Star-48 engine was built to launch satellites and was recently incorporated into the New Horizons probe, which took off in 2006. Powered by burning a mixture of ammonium perchlorate and aluminum, it boosted the Pluto-bound probe to approximately 36,000 miles per hour.
How fast is 1 g in mph?
For example: An acceleration of 1 g equates to a rate of change in velocity of approximately 35 kilometres per hour (22 mph) for each second that elapses.
What propulsion is used in space?
Table of methodsMethodEffective exhaust velocity (km/s)Technology readiness levelResistojet rocket2 – 68: Flight qualifiedArcjet rocket4 – 168: Flight qualifiedField emission electric propulsion (FEEP)100 – 1308: Flight qualifiedPulsed plasma thruster (PPT)207: Prototype demonstrated in space9 more rows
Can you accelerate indefinitely in space?
You can keep accelerating as long as you have the means. … Due to the distorting effects of the theory of relativity on space and time, you can keep accelerating at a constant acceleration forever, and yet never hit the speed of light.
Can you swim in space?
When swimming, you push against the viscous water to propel yourself forward. That wouldn’t work in space because there is no medium to push against. Space is a vacuum, and thus you need to dispel mass in one direction to move in the other (we do this by using rockets), or push against something (like the ISS).
Do things accelerate in space?
The object will continue to travel due to no other force being applied to it once it has left your, travelling at a constant speed. … An object thrown in space will move according to the forces on it in space. For instance, if you threw it in space near the Earth, it would accelerate due to the Earth’s gravity.