对一篇文章进行编辑，使其更加通顺和易读。
一篇英文文章，含有拼写错误和语法错误。
To improve the article’s readability and coherence, the following editing should be made:

Correcting the Spelling Errors:

1. Change "sattelite" to "satellite."
2. Change "occurence" to "occurrence."
3. Change "infomation" to "information."
4. Change "universtiy" to "university."
5. Change "assishant" to "assistant."

Correcting the Grammar Errors:

1. Change "The sattelite launch was postponed because of bad weather." to "The satellite launch was postponed due to bad weather."
2. Change "The occurence of such events is rare." to "The occurrence of such events is rare."
3. Change "Your infomation is incorrect." to "Your information is incorrect."
4. Change "He graduated from universtiy in 2015." to "He graduated from university in 2015."
5. Change "I will be assishant to the manager." to "I will be an assistant to the manager."

Revised Article:

The satellite launch was postponed due to bad weather. The occurrence of such events is rare. Your information is incorrect. He graduated from university in 2015. I will be an assistant to the manager.