█ _ مارتن ريس 2020 حصريا ❞ Gravity's Fatal Attraction ❝ 2025 Attraction: Richly illustrated with the images from observatories on ground and in space, computer simulations, this book shows how black holes were discovered, discusses what we've learned about their nature role cosmic evolution This thoroughly updated third edition covers new discoveries made past decade, including discovery of gravitational waves merging neutron stars, first close up region near a hole event horizon, observations debris stars torn apart when they ventured too to supermassive Avoiding mathematics, authors blend theoretical arguments observational results demonstrate both have contributed subject Clear, explanatory illustrations photographs reveal strange amazing workings our universe The engaging style makes suitable for introductory undergraduate courses, amateur astronomers, all readers interested astronomy physics كتب الادب الانجليزى مجاناً PDF اونلاين هذا القسم يشمل الاقسام الفرعية التي تحتوي علي لأدب الإنجليزي (بالإنجليزية: English literature) وهو ما يكتبه الكُتَّاب من إنجلترا وأسكتلندا وويلز باللغة الإنجليزية مجالات الشعر والنثر والمسرحية أدب غني بالروائع مختلف المجالات الأدبية كما أنه أقدم الآداب الغربية section includes sub sections that contain literature, which is written by writers England, Scotland Wales language poetry, prose drama areas ,