there's no oxygen in outer space then how do feuls in rockets burn in space ?
491647
They carry their own.\nEither in the form of liquid oxygen, or they use a fuel that  will liberate oxygen as part of the combustion reaction, like hydrogen peroxide.\n\nNote that these are very inefficient, because you have to haul large masses of oxidizers up out of the gravity well...  This is going to put an effective stop to long-haul space travel until a better form of propulsion is well established.\n\n(For extra points...)\nIon drives, mass reaction drives and things like hydrogen "ramjets" are being worked on as alternatives -  and, my favourite concept, the solar sail, is in the wings...  :-)\nI've sailed the oceans, I would really love to sail space, but I doubt I'll live that long.
488798
Hi:\n\nNASA mostly use hydrogen and oxygen or tri-nictro-oxide in the liquid stages of their rockets and ammonium Nitric or some other solid state fuel that similar to gun cotton for the solid rocket booster. However in the early day of rocketry; they use any liquid fuel that would combined with liquid oxygen, Such gasoline,100 proof grain alcohol,Kerosene, fuel oil. and gunpowder or gun cotton for solid rockets Today however they mostly use hydrogen and oxygen for the liquid fuel rockets. What type of fuel they put into their rocket depend on how much weight their payload is; and how high they want it to go, and if they are visiting the planets in our solar system this as to be accounted for too.\n\nBack in the 1950,s and 1960's NASA had developed a Nuclear rocket engine under a project name: "Project Pluto" where liquid hydrogen was heated by a nuclear reactor to produce  a rocket thrust to propel a spacecraft in space. It fell out favor with the public due to radiation issues. There is a new type of rocket that uses ion propulsion where a gas such a hydrogen or Xenon gas is ionized and run ed through a series of electrically charge grids and are accelerated to very velocity as they exit the spacecraft And then there is:  The Antimatter and Matter rocket engine this where Matter and Antimatter is allow to mix in certain ratio in a rocket reactor vessel and focused by magnetic field to generate a lot of thrust
414368
Those space suit the astronauts wear? THey are hooked up to and filled with not pure oxygen, like other answerers said, but the same mix of air as on earth -  78% nitrogen and 21% oxygen. This is done because pure oxygen is extremely flammable, and the astronauts of Apollo 1 died when a spark went off in their cockpit.
1078102
Over the past 40 years the space program has used two types of propulsion systems, those that use liquid and those that use solid propellants. In space the propellant typically has a source of fuel and an oxidizer to enable the fuel to burn. Today most space systems, such as the Space Shuttle, use a combination of the two systems. Solid propellants are the easiest and safest to work with; however, they are not controllable. Solid propellants have the fuel and the oxidizer combined into solid rods of material that once ignited by a high temperature source continue to burn until all of the propellant is consumed. Liquid propellants tend to be hazardous to handle; however, they are controllable and the engines can be turned on and off and the amount of thrust can be throttled \nduring a mission. Several liquid propellants are also toxic which can add to the handling \nproblems. \n\nThe specific impulse, measured in seconds, is the most commonly used figure of \nmerit for rocket thrusters and research efforts continue to increase the specific impulse of space propulsion systems. Anhydrous hydrazine is a colorless, toxic, corrosive, liquid that is insensitive to shock or friction and is chemically stable and can be stored in tanks for long periods of time. It is commonly used for propulsion in space, while solid propellants are used for the boost phase from the ground. Typical values for specific impulse for fuels used in space are 290 seconds for solid propellants, and 230 seconds for hydrazine. \nThe favorite fuel and oxidizer combination used during the boost phase are hydrogen and oxygen which can provide a specific impulse of 445 seconds, almost double the value of hydrazine. The problem with these fuels are that they must be held at cryogenic temperatures to remain in the liquid form. Hydrogen boils at - 253 degrees Celsius while oxygen boils at - 183 degrees Celsius. Thus, fueling the booster rockets is a complex and hazardous process, for as soon as oxygen comes in contact with hydrogen they spontaneously combust in a powerful explosion. Over the years these cryogenic engines have become the backbone for boosters, used for placing heavy payloads in space,such as those used for the main engine on the Space Shuttle. During the fueling process of these rockets great care must be taken to vent the vapors generated as the huge tanks cool down to below the boiling points of the fuel and oxidizer, while keeping the vapors separated to \nprevent an explosion. \n\n\nCryogenic Heat Engine\nan air-powered car is being developed by researchers at the University of Washington using the concept of a steam engine, except there is no combustion. The Washington researchers use liquid nitrogen as the propellant for their LN2000 prototype air car. The researchers decided to use nitrogen because of its abundance in the atmosphere -- nitrogen makes up about 78 percent of the Earth's atmosphere -- and the availablity of liquid nitrogen. There are five components to the LN2000 engine: \n•A 24-gallon stainless steel tank. \n•A pump that moves the liquid nitrogen to the economizer. \n•An economizer that heats the liquid nitrogen with leftover exhaust heat. \n•A heat exchanger that boils the liquid nitrogen, creating a high pressure gas. \n•An expander, which converts nitrogen's energy into usable power. \nThe liquid nitrogen, stored at -320 degrees Fahrenheit (-196 degrees Celsius), is vaporized by the heat exchanger. The heat exchanger is the heart of the LN2000's cryogenic engine, which gets its name from the extremely cold temperature at which the liquid nitrogen is stored. Air moving around the vehicle is used to heat the liquid nitrogen to a boil. Once the liquid nitrogen boils, it turns to gas in the same way that heated water forms steam in a steam engine. \nNitrogen gas formed in the heat exchanger expands to about 700 times the volume of its liquid form. This highly pressurized gas is then fed to the expander, where t
399933
The answer is: the sun doesn't burn.  What you are thinking of is combustion, the process of combining oxygen with something to release energy (fire).  What is happening in the sun is nuclear fusion.  Two hydrogen atoms smack into each other with such force that they join together to make a helium atom.  During this process, some of the mass is turned into energy, which is heat and light.  It has nothing to do with oxygen.
78721
NO it doesn't - if you're referring only to space - at zero gravity that is! \n\nThe initial launching rocket boosters are abandoned once you enter space, and the fuel is filled only to the suffice the requirement of the rocket launch - enough to push it into space for the rocket to thereon move autonomously.
879412
iron would be much denser and would increase the weight load of the fuel, changing the power requirements for the rocket.  Also, iron tends to oxidize much faster.
611632
space shuttle burns hydrogen. imagine you're standing under it when it launches. endothermic or exothermic?\n\ncorrect reaction formula was already given.
501997
u know wot!space doesnt even have enough air to carry sound waves !so lifeforms we know have no damn way sustaining their life in space!\n\nbut , there is oxygen in space, however, the majority of it has already \nbeen captured gravitationally by stars, planets, or other celestial bodies.  \nSo space is almost a perfect vacuum, but gas and dust particles do float \naround out there.  These particles are referred to as the interstellar \nmedium by astronomers.  \n\nAccording to Thomas Arny's "Explorations: An Introduction to Astronomy," if \nwe were to compare the amount of gas in interstellar space to the air we \nbreathe, it would be like "one marble in a box 5 miles on a side compared \nto the same box filled completely with marbles."  So needless to say, there \nisn't very much oxygen in outer space, but there is some.  And the reason \nthere isn't more is simply that the gravity of all the other various \ncelestial objects out there, including galaxies, has captured most of the \ngas and dust.\n\n\nbut universe is so large , who knows there could be other places where air could be found even then i seriously doubt the presence of enough oxygen\n\n\nAstronomers have detected the first presence of oxygen and carbon in the atmosphere of an extrasolar planet, a world already known to be venting massive amounts of gas into space. \n\nThe find is evidence of an atmospheric "blow off" in action, where energetic hydrogen gas drags heavier elements along for a supersonic ride into space.\n\n\n\nDespite the oxygen, the faraway planet is not one that would support life.\n\n\nThe Jupiter-like planet is officially called HD 209458b, tcalled  Osiris after an Egyptian god who was dismembered by his brother Seth. It orbits a Sun-like star 150 light-years from Earth. \n\nAstronomers already knew the planet was rapidly losing its atmosphere after they  found it spewing out enough hydrogen gas to create an envelope that extended and trailed the extrasolar world. \n\nThe planet was thought to be losing at least 10,000 tons of material each second, but researchers weren't sure the process was powerful enough to dredge up heavier elements.\n\nCarbon and oxygen atoms are 10 times heavier than those of hydrogen, and therefore would normally lie low in a planet's atmosphere. So a force stronger than gravity is driving them up along with the hydrogen gas into the extended envelope around this planet\n\n\nThe venting process has been attributed to a pair of reasons, namely the intense gravitational forces between the planet and its parent star, as well as the super-hot temperature of the planet's atmosphere. HD 209458b circles its stellar parent every 3.5 days from a distance of just 4.4 million miles (7 million kilometers), which is closer than Mercury's orbit around the Sun.\n\nThe tight orbit causes intense gravitational tiding that stretches the planet's atmosphere into an oval shape, not unlike a rugby ball, which can allow gas to escape. The upper atmosphere itself is baked up to 18,000 degrees Fahrenheit (10,000 degrees Celsius), which forces hydrogen atoms to expand outward at supersonic speeds. \n\nThe hydrogen wind erupts away from the planet like a geyser and is powerful enough to sweep up carbon and oxygen with it. \n\nThe planet may eventually shed its entire atmosphere, leaving behind only a solid core remnant of its once massive self.  \nThe process is similar to one that may have eventually produced the atmospheres around more local planets, such as Venus and Earth\n\n\n\nHD 209458b orbits a star in the constellation Pegasus, which can be seen with binoculars from the ground. The planet was first detected in 1999 using the wobble method of planet hunting. A separate team of astronomers previously detected sodium in the planet's atmosphere as well\n\nso maybe u r not so silly after all ,as this is a question to be answered satisfactorily answered!!
853505
life needs not only oxygen but othere conditions as well. Life needs essentailly he fore of gravity for the proceses of life to be active .It is graiy tha keeps the sir balanket over the surfaxce oif he earth . But for that , the air would vanish into thin air ! - would anish into space . Water would not flow and our food would not go doen  our throat and would not even be able to defecate . aain the climate is also imporant . We hae go to be at a distncefrom the dun hat would be expose us to a ligh and heat that is cinsucive to the development of live and tolerable to life .ALL  he planets around the sun are not locaed at a sistance very conducive to the deelopmemt of life like us .and all of hem dfo not hav a gaviy  tha is suitable for the fuctioning of our system . We are not independent of our great mother earth. We will not survive in any planet which dose not hae an amospher  and gavity like the earth. Oxygen alone won't  help us live .Since the building blocks of all elemens ar the same - electron and proton - we would be able create oxyen in any planet by a suiable process that man would be able to create by manipulaing the numbver of electrons in the aoms of any subasance aailable in any pkanet . We do not hae to transfer oxygen anywhere . we can create oxygen from   whatever is available anywhere.
819013
No oxygen of course. NASA has looked into heating space suits for use on Titan by using a flame generated by burning oxygen from a tank in the Titan atmosphere. Very practical, don't you think?
897147
No atmosphere to hold air in, and also no air. No air because all the componets of air (CO2, O2 and N2) are made by some biological life form. There is no life on the moon, and therefore none of these gasses.
515380
Your body would be pulled in every direction, though not really "exploding", that's a pretty good approximation of what would happen. If that didn't happen & you had oxygen, you would freeze to death. Or you would die from radiation(which is what would happen with the spacesuit, making the moon landing a farce).\n\nSpace kills, man.
126845
Space craft [usually] rely on rockets in space.  Rockets burn some fuel with some Oxidizer to produce lots of hot expanding gasses which are pushed out of the nozzle of the rocket.  When these gasses are pushed out the back of the rocket, they cause a change in momentum which accelerates the rocket forward.\n\nNewton’s 3rd law states, for every action, there is an equal and opposite reaction.\nSo if the action is that the rocket exhaust is pushed out the back of the space craft, then the equal and opposite reaction would be for the space craft to be pushed forward.\n\nThe law of conservation of momentum tells us that momentum is always conserved.  If a spacecraft is moving with some initial velocity (could be zero) that space craft has some momentum associated with it.  At any point in time later on, the momentum of all the parts to that space craft needs to equal up to that original value.  So if part of the craft (the burning fuel) is pushed out one direction, in order to conserve momentum, the other part of the craft needs to be pushed the other direction [otherwise it is breaking the law].\n\nIt is somewhat of a difficult concept to understand, I hoped I explained it well.\n\nRockets do not just work in space.  Obviously you can still use a rocket down here on Earth and it works for the same reasons it work in space.  The principle of how the rocket works is not just exclusive to rockets.  For example, if you sat on one of those chairs with wheels holding a heavy bag of sand, then you pushed/threw the bag away from you, you and the chair would start to move in the other direction.
661933
The thrust of rocket engines are how ships are controlled in space.  Many of the forces that affect air ships (drag, lift, gravity) do not apply since you specified no air or gravity.\n\nTechnically, air ships don't go to space, so there's no real answer to this question.  Richard Branson's Space Ship One recently flew to the edge of space and then landed like a plane, but (as the name indicates) it was a space ship, not an air ship.\n\nAnd there are air and gravity in space.  Gravity holds galaxies, separated by millions of light years, together, so gravity will definitely act on space ships only 100 or 200 miles above the earth.  What causes weightlessness in orbit is not a lack of gravity, but free fall.  The atmoshere is very, very thin at the altitudes where satellites and the shuttle fly, but it is that thin air, causing frictional drag on satellites and the space station, that require constant reboosting to keep them in orbit.\n\nKey to effective flight and control is stabilization, so in addition to moving and turning a ship in space, thrusters also are used to keep it from spinning (reaction wheels also are used for this function).
871918
only in space where there is no air\n\nof  course there no clouds either but electrical spark can still be produced artificially\n\nedit: "a mile away for every second counted: -- make this about 4-5 seconds; the sound speed is about 300m/s
381192
Rocket Principles\nA consquence of Newton's laws of motion is that for any object, or collection of objects, forces which only involve those objects and nothing else ("internal forces") cannot shift the center of gravity. For example, an astronaut floating in a space suit cannot shift his position without involving something else, e. g. pushing against his spacecraft. The center of gravity--or "center of mass"--is a fixed point, which cannot be moved without outside help (turning around it, however, is possible).\n\nBy throwing a heavy tool in one direction, the astronaut could get moving in the opposite direction, though the common center of gravity of the two would always stay the same. Given a bottle of compressed oxygen, the same result follows from squirting out a blast of gas (a scene that appeared in an early science fiction film). A rocket does much the same, except that the cold gas is replaced by the much faster jet of glowing gas produced by the burning of suitable fuel. At present, rockets are the only means capable of achieving the altitude and velocity necessary to put a payload into orbit.\n\nA rocket engine is a machine that develops thrust by the rapid expulsion of matter. Most rockets today operate with either solid or liquid propellants. The word propellant does not mean simply fuel, as you might think; it means both fuel and oxidizer. The fuel is the chemical rockets burn but, for burning to take place, an oxidizer (oxygen) must be present. Jet engines draw oxygen into their engines from the surrounding air. Rockets do not have the luxury that jet planes have; they must carry oxygen with them into space, where there is no air.\n\nThere are a number of terms used to describe the power generated by a rocket. \n\n\nThrust is the force generated, measured in pounds or kilograms. Thrust generated by the first stage must be greater than the weight of the complete launch vehicle while standing on the launch pad in order to get it moving. Once moving upward, thrust must continue to be generated to accelerate the launch vehicle against the force of the Earth's gravity. To place a satellite into orbit around the Earth, thrust must continue until the minimum altitude and orbital velocity have been attained or the launch vehicle will fall back to the Earth. Minimum altitude is rarely desirable, therefore thrust must continue to be generated to gain additional orbital altitude.\n\nThe impulse, sometimes called total impulse, is the product of thrust and the effective firing duration. A shoulder fired rocket has an average thrust of 600 lbs and a firing duration of 0.2 seconds for an impulse of 120 lb-sec. The Saturn V rocket, used during the Apollo program, not only generated much more thrust but also for a much longer time. It had an impulse of 1.15 billion lb-sec.\n\nThe efficiency of a rocket engine is measured by its specific impulse (Isp). Specific impulse is defined as the thrust divided by the mass of propellant consumed per second. The result is expressed in seconds. The specific impulse can be thought of as the number of seconds that one pound of propellant will produce one pound of thrust. If thrust is expressed in pounds, a specific impulse of 300 seconds is considered good. Higher values are better. A rocket's mass ratio is defined as the total mass at lift-off divided by the mass remaining after all the propellant has been consumed. A high mass ratio means that more propellant is pushing less launch vehicle and payload mass, resulting in higher velocity. A high mass ratio is necessary to achieve the high velocities needed to put a payload into orbit.\n\nThere are three categories of chemical propellants for rocket engines: liquid propellant, solid propellant, and hybrid propellant. The propellant for a chemical rocket engine usually consists of a fuel and an oxidizer. Sometimes a catalyst is added to enhance the chemical reaction between the fuel and the oxidizer. Each catego