Many objects in the sky should be nice to watch for all age group of people. People do not sleep in the night and they would like to watch the sky, and they write in a paper about the changes. Next day watch again the sky, there should be many changes. Those changes make a person to note in a paper and write about it. But, when created objects in the sky by scientists, is eager to know what it is by others. When everyone are sure that it is rocket, their next question in mind would move, who invented the rocket. Of, course now internet and search engines will bring any answer in seconds. If that person tries the same question who invented the rocket, he could view the correct answer that it is invented by a politician, scientist and lawyer Mr. William Congreve in the year seventeen seventy two. This answer should make happy him. He must not think that his questions are not being answered now in present days. Whatever question posted in search engine, he should get right answer. It is very easy and simple too. Some times there could be different pages.

In that case one must change the words for searching. That may help up to some extent by changing the words one could get easy answers from internet. There are many sites just with question and answers. In those sites some persons might have asked some difficult questions. An expert might have answered to those answers not only for that person; it is also for others with the same question. That answer is common for world people who have the same question in their minds for a long time. Even that person can make a question to that expert at the free of cost. All he must have to register himself with an e-mail Id. Later he can log in and ask for a question. It may take one or two days. Even one month but it is sure, that person can receive an answer from an expert. That answer is also directed to the person who has made that question. Question and answers sites are very popular now in the world. World level experts are answering to the questions as free service. Their entire requirement is others should make use of their answer. Major Websites also interested in designing pages for question and answers. Their motive is to educate the world people.