1 00:00:01,133 --> 00:00:02,633 black holes are regions in space where 2 00:00:02,633 --> 00:00:04,366 gravity is so incredibly strong that 3 00:00:04,366 --> 00:00:07,066 nothing not even light can escape to 4 00:00:07,066 --> 00:00:08,600 understand why black holes exist though 5 00:00:08,600 --> 00:00:10,700 we need to explore the life cycle of 6 00:00:10,700 --> 00:00:14,066 stars you see stars are born from vast 7 00:00:14,066 --> 00:00:16,333 clouds of gas and dust over millions of 8 00:00:16,333 --> 00:00:18,266 years gravity causes these clouds to 9 00:00:18,266 --> 00:00:20,700 collapse and form a dense core known as 10 00:00:20,700 --> 00:00:23,500 a protostar basically a young Star as a 11 00:00:23,500 --> 00:00:25,433 Proto star continues to gather Mass the 12 00:00:25,433 --> 00:00:27,433 core temperature will rise until it 13 00:00:27,433 --> 00:00:29,366 becomes hot enough to ignite nuclear 14 00:00:29,366 --> 00:00:32,166 fusion this process releases an 15 00:00:32,166 --> 00:00:34,300 incredible amount of energy which allows 16 00:00:34,300 --> 00:00:37,466 stars to shine brightly however when a 17 00:00:37,466 --> 00:00:40,333 massive star then exhausts that nuclear 18 00:00:40,333 --> 00:00:42,600 energy and has no more fuel a big event 19 00:00:42,600 --> 00:00:44,700 known as a supernova can occur during a 20 00:00:44,700 --> 00:00:47,133 supernova explosion the Stars outer 21 00:00:47,133 --> 00:00:49,533 layers are blasted into space leaving 22 00:00:49,533 --> 00:00:52,500 behind a dense core for stars massive 23 00:00:52,500 --> 00:00:57,400 enough that core can become a black hole