This science fiction fantasy novel features “an intriguing premise—the Islamic conquest of space—and an engagingly ingenuous hero.” (Library Journal) Abdul Hamid-Jones is under orders to help the Emir of Mars travel to the holy city of Mecca, a task that will all but assure Emir’s position as Caliph of the Muslim empire. But developing a fast, safe mode of interplanetary travel is a challenge no one has solved yet, least of a young scientist like Hamid-Jones. But this difficulty is nothing compared to the danger he encounters once caught in a web of court politics that puts his very life on the line.

The analysis of lunar crescent visibility criterion is vital in providing a comparative insight for predicting the visibility and suitability for Hijri calendar determination. While there have been previous attempts to measure the performance of lunar crescent visibility criterion, these attempts only apply to a singular analysis and not a comparative examination. Design, Development and Analysis of Lunar Crescent Visibility Criterion with Python explores the development of an analysis tool for lunar crescent visibility criterion using an integrated lunar crescent visibility database. The analysis tool, called HilalPy and HilalObs, was developed in the form of a Python library, so that it can be integrated into other software and webpages to enable deployment into various operating systems. This book will provide useful insights for the future development of lunar crescent visibility criterion, particularly for calendrical purposes. Key Features: ● Presents an analysis tool for lunar crescent visibility based on an integrated lunar crescent report database. ● Offers researchers and practitioners the capability to perform comparative analyses of the percentage of reliability in lunar crescent visibility criteria, thereby contributing to the construction of robust criteria for determining the Hijri calendar. ● Provides a comprehensive resource for researchers, students, policymakers, and practitioners involved in the determination of the Hijri calendar.

Contains 100 projects and experiments for beginning and amateur astronomical observation.

Instructions on how to go about sky watching. Grades 7-10.

An unusual and practical guide to the sky as we see it--with the naked eye.