The space shuttle must reach speeds of about 17,500 mph (28,000 kilometers per hour) to remain in orbit. The exact speed depends on the space shuttle's orbital altitude, which normally ranges from 190 miles to 330 miles (304 kilometers to 528 kilometers) above sea level, depending on its mission. Each of the two solid rocket boosters on the space shuttle carries more than one million pounds of solid propellant.

Because light is found on the electromagnetic spectrum, light travels at the same speed as other electromagnetic waves, which, in a vacuum, is 299,792,458 m/s, or 186,282.4 mi/s. Except when performing experiments that need the exact velocity of light, this number is usually rounded up to 3 ? 108 m/s (186,000 mi/s). Just like any other wave, light does slow down when it enters the Earth’s atmosphere. See similar questions...

Try looking up specific interests on the SpaceBio site found at http://www.spacebio.net. This site contains information and photos, diagrams, etc. on all these topics. For information about the human body in space, visit the on-line textbook found at http://www.nsbri.org/HumanPhysSpace/index.html published by the National Space Biomedical Research Institute. For photos and information about specific missions, try the Life Sciences Data Archives found at http://www.lsda.jsc.nasa.gov. See similar questions...

The answer to both questions depends on the weather! A balloon travels with the wind, so if the wind is light, a balloon won't travel far. If the wind is strong, a balloon will travel a greater distance. Wind speed varies at different altitudes so often a pilot can speed up or slow down by changing elevations. In order to lift off the ground, the air inside a balloon must be heated to a temperature greater than the air outside the balloon. See similar questions...

For information on NASA's space shuttle Return to Flight activities, visit: http://www.nasa.gov/news/highlights/returntoflight.html. NASA also has a Web site dedicated to human spaceflight where information on space shuttle launches can be found. It is located at: http://www.spaceflight.nasa.gov. See similar questions...

Shuttles generally run on the ½ hour between the Midtown and Westside campuses during the week, from 7 am – 11 pm, and on a more limited basis on the weekends. A full schedule is available from the Campus Safety website, and questions or concerns specific to the shuttle service, please direct them to Chief Neil McLaughlin. See similar questions...

The speed of sound in a medium depends upon several factors, such as density, temperature, whether the medium is a liquid or solid, and the elasticity of the medium. The more elastic the medium, the faster the sound wave will travel. The following table illustrates some examples of how fast sound can travel in different media. See similar questions...

The Inca Trail is high enough that some people do have problems with the altitude. Being short of breath is relatively common and is not, by itself, cause for concern. On the other hand, severe dizziness, loss of coordination and concentration, severely irregular (Cheyne-Stokes) breathing, and death from pulmonary or cerebral odoema are generally regarded as more serious symptoms of mountain sickness. See similar questions...

Safest, most reliable and affordable approach to meeting crew transportation requirements for exploration missions The capsule shape allows the main thermal protection system for reentry, the heat shield, to be protected (covered by the service module) until it is needed for reentry, unlike winged vehicles whose thermal protective system is exposed for ascent and on orbit. The capsule shape is more stable aerodynamically for entry for both nominal auto guided entries and emergency abort entries. See similar questions...

To the best of your humble FAQ author's knowledge, the current speed record for a 'hobby' radio controlled helicopter is just over 100 miles per hour. To get that fast requires extensive modification, so you end up with a helicopter that can go fast but doesn't really run well, emits an ear-splitting roar, doesn't fly well upside-down, and basically can't really do much besides go really fast. The average person's "sport" helicopter is still pretty quick though. See similar questions...

Whenever a Space Shuttle is in orbit, the U.S. Space Surveillance Network regularly examines the trajectories of orbital debris to identify possible close encounters. If another object is projected to come within a few kilometers of the Space Shuttle, the Space Shuttle will normally maneuver away from the object if the chance of a collision exceeds 1 in 10,000. This occurs infrequently, about once every year or two. See similar questions...

It is a very exciting, noisy, shaky ride for the first two minutes. Then the solid rocket boosters drop off and it gets a lot smoother, but there still is a strong push on the back of the astronauts' seats from all the power in the three main engines. Those three main engines burn fuel at an incredible rate -- approximately 3,785 liters (1,000 gallons) every second. See similar questions...

The only other vehicle in the world capable of carrying people into space is Russia's Soyuz rocket, which is an expendable launch vehicle that can be outfitted with a capsule designed for human flight in space and return to Earth. All other space vehicles in existence are expendable vehicles that are only capable of one-way trips to space. See similar questions...

The 25hp models use around 4~5 litres of fuel per hour of normal operation. Continuous cruising at 18 knots (~30 kph) in moderate chop with a normal load, fuel consumption is 5.1 litres per hour. The 25 litre tank will normally last for a full day of normal use, or 5 hours of continuous use. See similar questions...

If you live in a smokeless zone then you will be restricted to burning smokeless fuels. To check if you live in such an area, you can phone your local authority and ask them. If, like most people, you do not live in a smokeless zone then it is up to you what you burn. House coal produces very good heat. Wood also is very good. It is a matter of preference. With wood though, there comes a caution. Wood must be well seasoned before it is used in a fire. See similar questions...

Our cruisers use between 3,5 and 7 liters diesel per hours ? depending on the type of cruiser. You have to put approximately 100 Euros per week aside for refueling. Tariffs ? Availability ? Booking Form ? Terms & Conditions ? Map of the River ? How to get here ? FAQ See similar questions...

University Park Campus Academic Year Office Hours Are 8:30AM To 6:00PM, Monday-Friday. Health Sciences Campus 8:30AM to 4:00PM See similar questions...

Acute mountain sickness can occur to any one at an altitude above 10,000 ft. from the sea level. The most common symptoms of acute mountain sickness are headache, disturbed sleep, loss of appetite, nausea, coughing, irregular breathing, breathlessness, lassitude and lack of concentration. Since Leh Town is situated at an altitude of 11,500 ft. above sea level. It is advisable to take the following precautions, so as to acclimatize your body properly. See similar questions...

The public may view test firings of a space shuttle main engine when they occur during the visitor center's hours of operation and at scheduled public test fire viewings that will be announced through local media and on the Stennis Web site. To find out if a test is scheduled to occur on a day when you would like to visit, call the visitors center at 1-800-237-1821 in Mississippi and Louisiana, or (228) 688-2370. See similar questions...