ماستر ليج #51 | اهداف اسطورية من رونالدو و صلاح و انيستا 🔥 !! لا يفوتك 😱 !! | بيس 2018 PES

مقطع في طور الماستر ليج على لعبة PES 2018 , الطور عبارة على انك تكون مدير فني لـ فريق و يتطور و تشتري لاعبين , الطور المنافس له في لعبة فيفا 18 , هو طور المهنة .... Read More إقرأ المزيد | Share it now!

Vision Across the Full Spectrum: The Crab Nebula, from Radio to X-ray [Ultra HD]

The Crab Nebula (Messier 1) is the remnant of a supernova that exploded in the year 1054 AD. This mysterious “new star,” as early skywatchers called it, was observed around the world and most notably recorded by Chinese astronomers. The supernova was triggered when the progenitor star abruptly collapsed onto its iron core, and rebounded to expel most of its layers of gas into a blast wave. This wave is seen as an optical and infrared set of filaments that continues to impact surrounding material. This material was expelled from the dying red giant progenitor star 20,000 years prior to the supernova. The ultra-dense remnant core, called a neutron star, is crushed to the size of a city. Spinning furiously, the neutron star sends out twin beams of radiation, like a lighthouse. A lot of this energy comes from the neutron star’s intense magnetic fields. ... Read More إقرأ المزيد | Share it now!