Problem 1: Detector (like traveler 1) how to accomplish be taken in aerospace, short planet and sail all round the planet, and do not bump to other thing?

Reply: All aerospace detector that nobody drive are hold by the ground accuse. If what you say, there is very large space in aerospace, and also bump without what on road. We are very close dog the position of spacecraft and speed, profit from this, we can forecast its trend accurately very, so it won't dash against is large celestial body. Generally speaking, the course of spacecraft has been designed a few years ahead of schedule, so " drive " it just controls it to undertake a rocket blast off in right time, also include at the same time a few adjust tinily. In fact, also can produce same thing in task of flight holding a person, just do not need to depend on computer to do this thing, you need to ask air man went friendlily only.

Problem 2: Aerospace is a giant vacuum, as speed accelerate, everything produces change possibly, so communication also is met lag, assume major rock is dark cold to invisible degree, how does it avoid with rock barge against (is the rock of any size disastrous) ? So, is detector use radar navigation? If so, how can you just accomplish the sources of energy need not be used up?

Reply: The short planet that we can track radius size to make an appointment with 50 kilometers and low-lying ball orbit are small the celestial bodies to 1 centimeter. Of course, small to the rock more that does not explore. However, although be in short planet belt, they distributing in so large area, so that end the rock of flight task to produce the possibility minimum of collision with enough, we must accept one of this risks that are space flight calmly.

Spacecraft often by small hit to the rock of size of a sand, it is normal to resemble such bumping can considering as wear away. Another common trouble is cosmic ray, this is a kind of high-energy radiate. The software that it may bring about detector to go up appears little trouble is more infrequent perhaps ground electron equipment breakdown. However, the commonnest cause that the task fails is package breakdown or factitious error, the order that sent a mistake when the mankind (for instance Martian observer date, jet propulsion lab thinks to develop business to give them fuel with metric units, and actually development business is those who use is imperial unit) ; When invalidation of component of a crucial system (spark is for instance polar the touchdown of observer date system and Apollo the wiring short circuit of 13 oxygen canister) ; Airship is missing after engine is ignited (broom for instance nuclear detector, fail even the line with the earth after the ignition that sets beforehand blasts off, broke on the orbit that is in to book by discovery later 3 fragments) .

Space mission is extremely complex, a of any crucial systems small error causes the failure of the task possibly, no matter be to be on detector design, in still launching a process, or it is to expose outer the spaceflight parts of an apparatus that endures extreme temperature and vacuum environment.

Normally aerospace detector can do not have the invalidation below any bodeful circumstances, they stopped to send radio signal to the earth namely. Be because software has a problem,? Be because cosmic ray makes computer network broke down,? Be because a crucial hardware malfunctioned,? Is it was hit by rock? Our have no way is informed. We can be calculated the risk that rock bumps, fall probability extremely low. However, the breakdown of human error and project more expect hard.

Robot spacecraft

Robot spacecraft is a kind of spacecraft that nobody drive, be in normally hold remotely accuse state. Be designed to use the robot spacecraft that undertakes study scientificly to measure to call aerospace detector normally. Because cost and risk are inferior, a lot of space missions suit to be operated remotely more and not be operation holding a person. In addition, considering current technology, destination of a few planets, be like Venus or near Jupiter, too big to body influence of the mankind. And like Saturn, Uranus and Neptune such dilettante star is apart from too far, with current manned airship the technology cannot arrive, so aerospace detector is the only method that explores them.

Reference material

1.WJ encyclopedia

Word of 2. astronomy formal name

3.Curious.astro.cornell- Britt Scharringhausen

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