Warning: Table './islamics_hiahnew/cache_page' is marked as crashed and last (automatic?) repair failed query: SELECT data, created, headers, expire, serialized FROM cache_page WHERE cid = 'https://www.islamicsham.org/nashrah/2982' in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:242:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:navigation:page-cid:nashrah/2982:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2982', '', '216.73.216.196', 1777318611) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:261:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:navigation:tree-data:e43d1ad68987fb1f78e49a63c39b7caf'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2982', '', '216.73.216.196', 1777318611) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:244764:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'a:2:{s:4:\\"tree\\";a:106:{i:1;a:2:{s:4:\\"link\\";a:37:{s:14:\\"load_functions\\";s:0:\\"\\";s:16:\\"to_arg_functions\\";s:0:\\"\\";s:15:\\"access_callback\\";s:1:\\"1\\";s:16:\\"access_arguments\\";s:6:\\"a:0:{}\\";s:13:\\"page_callback\\";s:17:\\& in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:351:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'links:navigation:tree-data:e43d1ad68987fb1f78e49a63c39b7caf', created = 1777318611, expire = 0, headers = '', serialized = 0 WHERE cid = 'links:navigation:page-cid:nashrah/2982:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:109;}', 3, '', 'https://www.islamicsham.org/nashrah/2982', '', ' in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:245:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:primary-links:page-cid:nashrah/2982:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2982', '', '216.73.216.196', 1777318611) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:264:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:primary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2982', '', '216.73.216.196', 1777318611) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:385:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'a:2:{s:4:\\"tree\\";a:0:{}s:10:\\"node_links\\";a:0:{}}', created = 1777318611, expire = 0, headers = '', serialized = 1 WHERE cid = 'links:primary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:109;}', 3, '', 'https://www.is in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:357:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'links:primary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe', created = 1777318611, expire = 0, headers = '', serialized = 0 WHERE cid = 'links:primary-links:page-cid:nashrah/2982:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:109;}', 3, '', 'https://www.islamicsham.org/nashrah/2982', '', in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:247:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:secondary-links:page-cid:nashrah/2982:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2982', '', '216.73.216.196', 1777318611) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:266:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:secondary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2982', '', '216.73.216.196', 1777318611) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:387:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'a:2:{s:4:\\"tree\\";a:0:{}s:10:\\"node_links\\";a:0:{}}', created = 1777318611, expire = 0, headers = '', serialized = 1 WHERE cid = 'links:secondary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:109;}', 3, '', 'https://www. in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:361:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'links:secondary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe', created = 1777318611, expire = 0, headers = '', serialized = 0 WHERE cid = 'links:secondary-links:page-cid:nashrah/2982:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:109;}', 3, '', 'https://www.islamicsham.org/nashrah/2982', ' in /home/islamics/public_html/includes/database.mysql.inc on line 136
كيف تتشكل النجوم؟ | هيئة الشام الإسلامية
الاثنين 10 ذو القعدة 1447 هـ الموافق 27 أبريل 2026 م
الصفحة الرئيسية » مجلة نور الشام
كيف تتشكل النجوم؟
الاثنين 1 رمضان 1437 هـ الموافق 6 يونيو 2016 م
عدد الزيارات :

 

كيف تتشكل النجوم؟
تتشكل النجوم عندما تنجذب ذرات الهيدروجين في الفضاء بعضها إلى بعض وتجتمع معاً، فيبدأ الغاز بالاحتراق وتلمع النجمة.

هل تملك النجوم اللون نفسه؟
كلا، ونلاحظ أنها تتمتع بألوان مختلفة ويعتمد لون النجمة على حرارتها، فالنجمة الزرقاء هي الأشد حرارة، أما النجمة الحمراء فهي الأقل حرارة.

لماذا تومض النجوم؟
تومض النجوم لأن الضوء الذي ترسله نحو الأرض يتلوى نتيجة تيارات الهواء التي تتحرك في غلافنا الجوي. إذا كان على الضوء أن يسافر فوق غلاف الأرض الجوي، فلن نرى النجوم تومض إطلاقاً!

ما أفضل وقت من الليل لمشاهدة النجوم؟
الوقت الأفضل لمشاهدة النجوم هو عندما تكون السماء مظلمة إلى أقصى درجاتها أي عند منتصف الليل، عندما تكون الشمس في الجهة المقابلة من الأرض.

هل يمكننا رؤية النجوم نفسها طوال السنة؟
كلا، إذ  أن الأرض تدور حول الشمس وفي خلال السنة يمكننا رؤية جميع النجوم التي تحيط بالشمس على حسب موقعنا منها. تقع نجمة القطب تقريباً فوق نظامنا الشمسي مباشرة، ولذلك يمكن للناس الذين يعيشون في نصف الكرة الشمالي أن يروها طيلة السنة. أما الناس الذين يعيشون في النصف الجنوبي فالأمر نفسه ينطبق عليهم بالنسبة لنجمة الصليب الجنوبية
 


Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:3887:\"Table './islamics_hiahnew/sessions' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE sessions SET uid = 0, cache = 0, hostname = '216.73.216.196', session = 'messages|a:1:{s:5:\\"error\\";a:8:{i:0;s:320:\\"user warning: Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:primary-links:page-cid:nashrah/2982:1' in /home/islami in /home/islamics/public_html/includes/database.mysql.inc on line 136