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Why is most space exploration accomplished with spacecraft without astronauts?
Wiki User
∙ 9y ago
The most obvious answer to your question is the fact that people have to return to earth, while an unmanned craft can stay in space infinitely. Manned spacecraft require things like oxygen, water, food and communications equipment, none of which are required by an unmanned spacecraft. That means unmanned spacecrafts can be sent into space for a fraction of the cost of a manned spacecraft. So basically, it's much cheaper and safer to send unmanned spacecrafts to explore the universe.
Wiki User
∙ 9y ago
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What is a csm?
Without the "Space Travel and Exploration" context I'd have said "Customer Service Manager".However, in this particular category, it probably means "Command/Service Module", the portion of the Apollo spacecraft that returned to Earth orbit from the Moon. (The Service Module was the "rocket" part that was discarded and burned up; the Command Module is the cone-shaped part the astronauts were in that actually landed.)
Can astronauts have a conversation in space without radios?
No, not in space. Sound needs air to travel through, and there's no air in space. However, while they're inside their spacecraft, the capsule is kept full of pressurized breathable air, just so they don't have to wear their space-suits all the time. Since they do have air inside, they can converse without radio while they're in there.
Why did astronauts need to wear space suits when they visited the moon?
There is no atomosphere or atmospheric pressure. Without atomspheric pressure the astronauts blood would boil.
Why do astronauts wear a special kind of clothing?
The astronauts spacesuits are a type of life support system to keep them alive when outside of the spacecraft. Then it supplies them with air, water, communications, cooling, waste disposal and anything else they need for survival in an environment in which it is impossible to live without it. The orange spacesuits worn by space shuttle astronauts during launch and re-entry provide air,communications and also prevents their blood from pooling in one part of the body causing faintness. Most of the time on the shuttle and the International Space Station, astronauts wear regular clothing and only need to use special suits for EVA and launch and re-entry procedures.
Why do astronauts need space helmets?
Because when in space you need to have an atmosphere of your own. Without one you wouldn't have any air. The moment you tried to inhale without a helmet... you'd implode.
What is a csm?
Without the "Space Travel and Exploration" context I'd have said "Customer Service Manager".However, in this particular category, it probably means "Command/Service Module", the portion of the Apollo spacecraft that returned to Earth orbit from the Moon. (The Service Module was the "rocket" part that was discarded and burned up; the Command Module is the cone-shaped part the astronauts were in that actually landed.)
Can you fly while you are in a space shuttle in space?
You may have seen photos or videos of astronauts who appear to be floating through the air while in space. They aren't flying, nor are they really floating, they are falling. Any orbiting spacecraft (such as the space shuttle or international space station) is actually falling around the Earth in a circular pattern. They have achieved enough speed (over 17,000 mph) to continue moving around the Earth without the Earth's gravity pulling the spacecraft down. Astronauts aboard those spacecraft are moving inside the spacecraft and falling along with them at the same speed giving the appearance that they flying or floating inside.
Why is fuel cell so useful to spacecraft?
Without fuel, the spacecraft cannot launch.
What do you call a rocket without astronauts?
A satalite
Who is the first person who jumped into earth orbit without a spacecraft?
Not yet so far..:-)because its not possible to a human to go onto a space without any spacecraft... but The first man who jumped in an earth's orbit with a spacecraft is "YURI GAGARIN"
What if anything is the spaceship an improvement on?
Without speaking in absolutes, the spaceship is the logical continuation of increasingly complex exploration and transportation vehicles. Generalizing, from newest to oldest: Spacecraft, Airplane, Automobile, Locomotive, Sailing Ship, and Wheeled Cart (possibly Travois before that).
Did the Nina the Pinta and the Santa Maria have anything to do with Thanksgiving?
Of course!! Without their great exploration there is no Thanksgiving! Thus there is no thanksgiving without their exploration!
Why do scientists use spacecraft without people to explore space?
scientists use spacecraft without people to explore space because scientists need to know more about space and the solar system
Movie about a cancelled trip to Mars?
Capricorn One was a film about a fraudulent trip to Mars. The astronauts expect to go on an extended space journey but are led away from the ship and to a secret NASA base while the spacecraft makes the trip without them. Their entire mission is then faked in a movie studio.
Does being an astronaut require certain math skills?
Imagine you're on a spaceship in orbit around the moon. You have a fuel leak and are running out of power. When do you fire the ship's thrusters, and for how long and in what direction, in order to be able to return to Earth safely? Obviously, this is not a question that astronauts usually face (except maybe on Apollo 13) but hopefully it illustrates the way in which math (in this case, calculus, algebra, etc.) and science (in this case, the physics of orbits), which has math at its heart, relates to everything that goes on in a space flight mission. All the science and engineering that goes into designing, building and flying spacecraft is based on math - without math, there would be no way to predict beforehand how the spacecraft would react to different conditions and how it would move in its orbit. I imagine that astronauts probably don't directly use much more than simple math when on a flight - important calculations are done by computers - but to have some idea of what a spacecraft is doing and how it is operating, without placing complete blind faith in the people who built it, requires a knowledge of math. Also, in addition to flying and maneuvering a spacecraft, astronauts are often involved in conducting scientific experements aboard the spacecraft, which would involve math in other ways too.
What happens to the muscle of astronauts who are in space of an extended period?
Astronauts' muscles atrophy in space due to the decreased work they do without Earth's gravity.
Can astronauts have a conversation in space without radios?
No, not in space. Sound needs air to travel through, and there's no air in space. However, while they're inside their spacecraft, the capsule is kept full of pressurized breathable air, just so they don't have to wear their space-suits all the time. Since they do have air inside, they can converse without radio while they're in there.
