QUESTION: Fix punctuation: Discussion about providing Debian for astronomy
ANS: Discussion about providing Debian for astronomy.

QUESTION: Fix punctuation: Therefore they cannot be applied for products that has been produced elsewhere
ANS: Therefore they cannot be applied for products, that has been produced elsewhere.

QUESTION: Fix punctuation: If lots of tabs are often open at the same time especially if that means that not all tabs are displayed all the time in the horizontal bar
ANS: If lots of tabs are often open at the same time, especially if that means that not all tabs are displayed all the time in the horizontal bar.

QUESTION: Fix punctuation: How to make a keylogger undetectable by antivirus software on Windows 107881XP etc
ANS:
How to make a keylogger undetectable by anti-virus software on Windows 10/7/8/8.1/XP etc.