Time-bound worship in places where there is no time

The religion of Islam and the Prophet of this religion. There are obligatory acts of worship that every person who believes in Muhammad (s.a.v.) must perform as commanded by Allah himself. A certain amount of time must have passed in order to perform some of these obligatory acts of worship. However, there are places, both in our world and outside our world, where determining time is very difficult under todays conditions. In this study, we tried to explain in what time and situation we can perform the prayers that God has made obligatory for us, his servants, in places where the time cannot be determined, and how to perform worships whose time is determined according to the lunar months, such as fasting in the month of Ramadan, in places where the moon is not visible. This study we have conducted is important in terms of how to worship in space in these periods when our countrys space travel has just begun. While doing our study, basic fiqh books, basic hadith books and tafsir books, especially the Quran and Sunnah, which are the basic sources of fiqh, were used.